HELP in chess project in C

Question

themenucha 0 Newbie Poster

12 Years Ago

Hi! I'm making a chess program, that need to move pieces on the chess board, get an input,check if the move is valid and print the output. The compiler finds some errors that i don't understand...I need some help with the pieces functions. Plz help me fix them!!!
my attempts :

//Chess project//


#include <cstdlib>
#include <iostream>

using namespace std;
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
// all figures are represented as a constant integers//
//constants
// all columns are presented as an integers
#
 int board[8][8];//chess board is presented as a 2D array of int
#define empty 0
#define pawn 1
#define rook 2
#define knight 3
#define bishop 4
#define queen 5
#define king 6 


//functions declaration 
int char_to_int(char c);
void setup_board();
void print_board();
void get_moove(int x1,int y1,int x2,int y2);
int  check_if_empty(int x2, int y2);  
int pawn_moove( int x1,int x2,int y1, int y2) ;  
int rook_moove(int x1,int x2,int y1, int y2);
int knight_moove(int x1,int x2,int y1, int y2);      
int bishop_moove(int x1,int x2,int y1, int y2);
int queen_moove(int x1,int x2,int y1, int y2);
int king_moove(int x1,int x2,int y1, int y2);     
void update_board(int x1,int y1,int x2,int y2);      
char print_piece(int x, int y);
void print_board();     

void setup_board()
{
     //Normal board setup
   board[0][0]=rook;
   board[0][1]=knight;
   board[0][2]=bishop;
   board[0][3]=queen;
   board[0][4]=king;
   board[0][5]=bishop;
   board[0][6]=knight;
   board[0][7]=rook;
   board[1][0]=pawn;
   board[1][1]=pawn;
   board[1][2]=pawn;
   board[1][3]=pawn;
   board[1][4]=pawn;
   board[1][5]=pawn;
   board[1][6]=pawn;
   board[1][7]=pawn;
   board[2][0]=empty;
   board[2][1]=empty;
   board[2][2]=empty;
   board[2][3]=empty;
   board[2][4]=empty;
   board[2][5]=empty;
   board[2][6]=empty;
   board[2][7]=empty;
   board[3][0]=empty;
   board[3][1]=empty;
   board[3][2]=empty;
   board[3][3]=empty;
   board[3][4]=empty;
   board[3][5]=empty;
   board[3][6]=empty;
   board[3][7]=empty;
   board[4][0]=empty;
   board[4][1]=empty;
   board[4][2]=empty;
   board[4][3]=empty;
   board[4][4]=empty;
   board[4][5]=empty;
   board[4][6]=empty;
   board[4][7]=empty;
   board[5][0]=empty;
   board[5][1]=empty;
   board[5][2]=empty;
   board[5][3]=empty;
   board[5][4]=empty;
   board[5][5]=empty;
   board[5][6]=empty;
   board[5][7]=empty;
   board[6][0]=pawn;
   board[6][1]=pawn;
   board[6][2]=pawn;
   board[6][3]=pawn;
   board[6][4]=pawn;
   board[6][5]=pawn;
   board[6][6]=pawn;
   board[6][7]=pawn;
   board[7][0]=rook;
   board[7][1]=knight;
   board[7][2]=bishop;
   board[7][3]=queen;
   board[7][4]=king;
   board[7][5]=bishop;
   board[7][6]=knight;
   board[7][7]=rook;
}

  int main()
{
      char c;//to conert from letter to int
      int x,y;
    int x1,x2;//for column
    int y1,y2;//for row

    setup_board();



        printf("**********************************************************\n");    
        printf("Hi. Wellcome to Kirills simple chess program!!!\n");

        printf("Type 'Q' to to Quit\n");
         print_board();
        while(1)

        printf("Please select a starting position for a figure for instance E,2,in upper case\n");

        scanf("%c, %d",&c,&y);
        x1=char_to_int(c);
        if(c=='Q')//Exit chess
        {
                          printf("Thank you ang goodbye\n");
                          return 0;
                          }
        y1=y-1;
        printf("Please select a finishing position for a figure for instance E,4");
        scanf("%c, %d",&c,&y);
        x2=char_to_int( c);
        y2=y-1;

        get_moove(x1,y1,x2,y2);
        return 0;
    }
    //Fuctions definitions
    int char_to_int(char c)
    {

        int x;
        if(c=='Q')
        {
                  printf("BYE BYE\n");
                  }
                  else if((c!='A')||(c!='B')||(c!='C')||(c!='D')||(c!='E')||(c!='F')||(c!='G')||(c!='H'))
                  {
                       printf("Sorry wrong column selection. Re enter.\n");
                       return -1 ;
                       }
                       else
                       x=c-65;//A will be converted to 0, B to 1, etc...
                       return x;
                       }
    char print_piece(int x, int y)//converts number from the board to piece character
{
   char piece = ' ';
   switch(board[x][y])
   {
      case pawn:
         piece='P';
         break;
      case rook:
         piece='R';
         break;
      case knight:
         piece='N';
         break;
      case bishop:
         piece='B';
         break; 
      case queen:
         piece='Q';
         break;
      case king:
         piece='K';
         break;
      default:
         piece=' ';
         break;
   }

   return piece;
} 
void print_board()
{
char a8=print_piece(0,0), b8=print_piece(0,1), c8=print_piece(0,2), d8=print_piece(0,3),e8=print_piece(0,4), f8=print_piece(0,5),  g8=print_piece(0,6), h8=print_piece(0,7);     
char a7=print_piece(1,0), b7=print_piece(1,1), c7=print_piece(1,2), d7=print_piece(1,3),e7=print_piece(1,4), f7=print_piece(1,5),  g7=print_piece(1,6), h7=print_piece(1,7);
char a6=print_piece(2,0), b6=print_piece(2,1), c6=print_piece(2,2), d6=print_piece(2,3),e6=print_piece(2,4), f6=print_piece(2,5),  g6=print_piece(2,6), h6=print_piece(2,7);
char a5=print_piece(3,0), b5=print_piece(3,1), c5=print_piece(3,2), d5=print_piece(3,3),e5=print_piece(3,4), f5=print_piece(3,5),  g5=print_piece(3,6), h5=print_piece(3,7);
char a4=print_piece(4,0), b4=print_piece(4,1), c4=print_piece(4,2), d4=print_piece(4,3),e4=print_piece(4,4), f4=print_piece(4,5),  g4=print_piece(4,6), h4=print_piece(4,7);
char a3=print_piece(5,0), b3=print_piece(5,1), c3=print_piece(5,2), d3=print_piece(5,3),e3=print_piece(5,4), f3=print_piece(5,5),  g3=print_piece(5,6), h3=print_piece(5,7);
char a2=print_piece(6,0), b2=print_piece(6,1), c2=print_piece(6,2), d2=print_piece(6,3),e2=print_piece(6,4), f2=print_piece(6,5),  g2=print_piece(6,6), h2=print_piece(6,7);
char a1=print_piece(7,0), b1=print_piece(7,1), c1=print_piece(7,2), d1=print_piece(7,3),e1=print_piece(7,4), f1=print_piece(7,5),  g1=print_piece(7,6), h1=print_piece(7,7);

printf("   +---+---+---+---+---+---+---+---+");
printf("\n");
printf("8  | %c | %c | %c | %c | %c | %c | %c | %c ",a8,b8,c8,d8,e8,f8,g8,h8);
printf("\n");
printf("   +---+---+---+---+---+---+---+---+");
printf("\n");
printf("7  | %c | %c | %c | %c | %c | %c | %c | %c ",a7,b7,c7,d7,e7,f8,g7,h7);
printf("\n");
printf("   +---+---+---+---+---+---+---+---+");
printf("\n");
printf("6  | %c | %c | %c | %c | %c | %c | %c | %c ",a6,b6,c6,d6,e6,f6,g6,h6);
printf("\n");
printf("   +---+---+---+---+---+---+---+---+");
printf("\n");
printf("5  | %c | %c | %c | %c | %c | %c | %c | %c ",a5,b5,c5,d5,e5,f5,g5,h5);
printf("\n");
printf("   +---+---+---+---+---+---+---+---+");
printf("\n");
printf("4  | %c | %c | %c | %c | %c | %c | %c | %c ",a4,b4,c4,d4,e4,f4,g4,h4);
printf("\n");
printf("   +---+---+---+---+---+---+---+---+");
printf("\n");
printf("3  | %c | %c | %c | %c | %c | %c | %c | %c ",a3,b3,c3,d3,e3,f3,g3,h3);
printf("\n");
printf("   +---+---+---+---+---+---+---+---+");
printf("\n");
printf("2  | %c | %c | %c | %c | %c | %c | %c | %c ",a2,b2,c2,d2,e2,f2,g2,h2);
printf("\n");
printf("   +---+---+---+---+---+---+---+---+");
printf("\n");
printf("1  | %c | %c | %c | %c | %c | %c | %c | %c ",a1,b1,c1,d1,e1,f1,g1,h1);
printf("\n");
printf("   +---+---+---+---+---+---+---+---+");
printf("\n");
printf("     A   B   C   D   E   F   G   H   ");  
}                   
 void get_moove(int x1,int y1,int x2,int y2)
 {
      int choice;
      choice=board[x1][y1];

      switch(choice)
      {
                    case 1:pawn_moove(x1,y1,x2,y2);
                    break;
                    case 2:rook_moove(x1,y1,x2,y2);
                    break;
                    case 3:knight_moove(x1,y1,x2,y2);
                    break;
                    case 4:bishop_moove(x1,y1,x2,y2);
                    break;
                    case 5:queen_moove(x1,y1,x2,y2);
                    break;
                    case 6:king_moove(x1,y1,x2,y2);
                    break;                    
                    default:
                            printf("Wrong selection of start/finish combination\n");
                            break;
                            }
                            }

  //Function's definitions                                       
  int  check_if_empty(int x2, int y2)//if board[x2][y2]=0 it's empty
{
    if(board[x2][y2]> 0) 
    {
        printf("The place is not empty\n");
        return 0;
    }
    else
    return 1;
}
void  update_board(int x1,int x2,int y1, int y2)
{
      int temp=0;
      board[x2][y2]=board[x1][y1];
      board[x1][y1]=0;
      return;
      }

int pawn_moove(int x1,int x2,int y1, int y2)
{
    int dx,dy;
    dx=abs(x2-x1);
    dy=abs(y2-y1);
    if((dx!=0)&&(dy>2))
    {
                     printf("Cannot moove- the moove is illegall!\n");
                     return 0;
                     }
                     else
                     {
                         if((check_if_empty(x1,y1+1)||(check_if_empty(x2,y2))))
                         {
                     update_board(x1,y1,x2,y2);
                     print_board();
                     return 1;
}
}
}
int rook_moove(int x1,int x2,int y1, int y2)
{
    int dx,dy;
    int i,j;
    dx=abs(x2-x1);
    dy=abs(y2-y1);
    if(((dx!=0)&&(dy=0))||((dy!=0)&&(dx=0)))
    {
                     printf("Cannot moove- the m oove is illegall!\n");
                     return 0;
                     }
                     else
                     {
                         for(i=x1+1;i<x2;i++)
                         {
                       if(check_if_empty(i,y2))
                      {
                       update_board(x1,y1,x2,y2);
                       print_board();
                       return 1;
                       } 
                       }
                       }
                        else

                     {
                         for(j=y1+1;j<y2;j++)
                         {
                       if(check_if_empty(x1,j))
                      {

                      update_board(x1,y1,x2,y2);
                       print_board();
                     return 1;
    }                 
}
}
}                  
 int knight_moove(int x1,int x2,int y1, int y2)
{
    int dx,dy;
    dx=abs(x2-x1);
    dy=abs(y2-y1);
    if (((dx )!< 3) &&((dy)! < 3 )&& ((dx+dy)! == 3)))
    {
   printf("Cannot moove- the moove is illegall!\n");
   return 0;
}
                    else
                    {
                     if(check_if_empty(x2,y2))
                     {
                     update_board(x1,y1,x2,y2);
                     print_board();
                    return 1;
}     
} 
}  
int bishop_moove(int x1,int x2,int y1, int y2)
{
    int i,j;
    int dx,dy;
    dx=abs(x2-x1);
    dy=abs(y2-y1);
    if(dx!=dy)
    {
   printf("Cannot moove- the moove is illegall!\n");
   return 0;
}
                    else
                    {
                    for(i=x1+1,j=y1+1;i<x2,j<y2;i++,j++)

                    {

                     if(check_if_empty(i,j))
                     {
                      update_board(x1,y1,x2,y2);
                      print_board() 
                    return 1;
                     }
}     
}      
  int queen_moove(int x1,int x2,int y1, int y2)
  {
      int i,j;
    int dx,dy;
    dx=abs(x2-x1);
    dy=abs(y2-y1);
 if((((dx!=0)&&(dy=0))||((dy!=0)&&(dx=0)))||(dx!=dy))
{      
       printf("Cannot moove- the moove is illegall!\n");
   return 0;
}
                     else
                     {
                    for(i=x1+1,j=y1+1;i<x2;j<y2;i++,j++)

                    {

                     if(check_if_empty(i,j));
                     }
                     }
                      else
                     {
                         for(i=x1+1;i<x2;i++)
                         {
                       if(check_if_empty(i,y2));
                       }
                        else
                     {
                         for(j=y1+1;j<y2;j++)
                         {
                       if(check_if_empty(x1,j));
                       }

                      update_board(x1,y1,x2,y2);
                      print_board();
                     return 1;
}
}  
     int king_moove(int x1,int x2,int y1, int y2)
  {
    int dx,dy;
    dx=abs(x2-x1);
    dy=abs(y2-y1);
   if( (dx!=dy)||(dx!=0)&&(dy=1)||(dy!=0)&&(dx==0))&&(dx+dy!=2))

       printf("Cannot moove- the moove is illegall!\n");
   return 0;

                    else
                    {
                      if(check_if_empty(x2,y2));
                      }
                     update_board(x1,y1,x2,y2);
                     print_board();
                    return 1;
} 
}

Thanx!!!

c chess for-loop if-else simple

Edited 11 Years Ago by Dani because: Formatting fixed

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Latest Post 12 Years Ago Latest Post by DJSAN10

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DJSAN10 28 Posting Whiz in Training

12 Years Ago

scanf("%c,%d",&c,&y);

There should be No comma between %c and %d!!!!

DJSAN10 28 Posting Whiz in Training

12 Years Ago

Okay paste what does it print now. All values. For both scanfs.

DJSAN10 28 Posting Whiz in Training

12 Years Ago

Well in char_to_int() , try doing this..

x = c - 'A'

What you have done should not be a problem IMO, but its time for some trial and error

Actually , even output of your first scanf is wrong it should be 4 and not -4

Edited 12 Years Ago by DJSAN10 because: n/a

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DJSAN10 28 Posting Whiz in Training · Answer 1 · 2012-01-31T16:49:14+00:00

*POST YOUR CODE USING CODE TAG
*FORMAT YOUR CODE
*POST THE ERRORS THAT THE COMPILER IS GIVING YOU

while(1)

You need to put the opening brace

if(check_if_empty(x2,y2));

What is this for?

for(i=x1+1,j=y1+1;i<x2;j<y2;i++,j++)

Semicolon between two conditions -wrong !!!

There will be many more I suppose. Please follow the above three things, you will get your answers faster

DJSAN10 28 Posting Whiz in Training · Answer 2 · 2012-01-31T16:52:02+00:00

Also , your entire code of setup_board() can be re written much efficiently using a for loop.

So many more... please do the formatting

themenucha 0 Newbie Poster · Answer 3 · 2012-01-31T18:08:35+00:00

What do you mean under formatting?
check_if_empty checks ifthe final position is not occupied, if its >0(occupied) it returns 0.
Actually I did the CODE mark, i don't know why isn't it working.
Those are compilation errors(VS6):

c:\users\kirill.avital\desktop\avital\chess\kirill_chess.cpp(110) : warning C4101: 'x' : unreferenced local variable
c:\users\kirill.avital\desktop\avital\chess\kirill_chess.cpp(325) : error C2181: illegal else without matching if
c:\users\kirill.avital\desktop\avital\chess\kirill_chess.cpp(345) : error C2143: syntax error : missing ')' before '!'
c:\users\kirill.avital\desktop\avital\chess\kirill_chess.cpp(345) : error C2059: syntax error : ')'
c:\users\kirill.avital\desktop\avital\chess\kirill_chess.cpp(345) : error C2059: syntax error : ')'
c:\users\kirill.avital\desktop\avital\chess\kirill_chess.cpp(346) : error C2143: syntax error : missing ';' before '{'
c:\users\kirill.avital\desktop\avital\chess\kirill_chess.cpp(350) : error C2181: illegal else without matching if
c:\users\kirill.avital\desktop\avital\chess\kirill_chess.cpp(381) : error C2143: syntax error : missing ';' before 'return'
c:\users\kirill.avital\desktop\avital\chess\kirill_chess.cpp(386) : error C2601: 'queen_moove' : local function definitions are illegal
c:\users\kirill.avital\desktop\avital\chess\kirill_chess.cpp(442) : fatal error C1004: unexpected end of file found
Error executing cl.exe.

Kirill_chess.obj - 9 error(s), 1 warning(s)
thANX AGAIN

DJSAN10 28 Posting Whiz in Training · Answer 4 · 2012-01-31T18:38:18+00:00

By formatting , I mean something like this

if(c=='Q')
	{
            printf("BYE BYE\n");
	}
	else if((c!='A')||(c!='B')||(c!='C')||(c!='D')||(c!='E')||(c!='F')||(c!='G')||(c!='H'))
	{
		printf("Sorry wrong column selection. Re enter.\n");
		return -1 ;
	}
	else
		x=c-65;//A will be converted to 0, B to 1, etc...

DJSAN10 28 Posting Whiz in Training · Answer 5 · 2012-01-31T18:42:41+00:00

error C2143: syntax error : missing ';' before 'return'

There must be a semicolon on line 380 after print_board()

syntax error : missing ')' before '!'

There is nothing like !< . Use > (greater than) or >= whichever is appropriate

DJSAN10 28 Posting Whiz in Training · Answer 6 · 2012-01-31T18:50:31+00:00

(325) : error C2181: illegal else without matching if

Now this is how formatting would help you. You can clearly see one else is misplaced

int rook_moove(int x1,int x2,int y1, int y2)
	{
		int dx,dy;
		int i,j;
		dx=abs(x2-x1);
		dy=abs(y2-y1);
		if(((dx!=0)&&(dy=0))||((dy!=0)&&(dx=0)))
		{
			printf("Cannot moove- the m oove is illegall!\n");
			return 0;
		}
		else
		{
			for(i=x1+1;i<x2;i++)
			{
				if(check_if_empty(i,y2))
				{
					update_board(x1,y1,x2,y2);
					print_board();
					return 1;
				}
			}
		}
		else
		{
			for(j=y1+1;j<y2;j++)
			{
				if(check_if_empty(x1,j))
				{

					update_board(x1,y1,x2,y2);
					print_board();
					return 1;
				}
			}
		}
	}

More specifically , this is the else

else
{
for(j=y1+1;j<y2;j++)
{

themenucha 0 Newbie Poster · Answer 7 · 2012-01-31T19:21:30+00:00

What do you mean by misplaced?I tried to recompile but there's "expected primary expression before else"...Both elses have the same structire....

zeroliken 79 Nearly a Posting Virtuoso · Answer 8 · 2012-02-01T09:40:56+00:00

Now this is how formatting would help you. You can clearly see one else is misplaced

int rook_moove(int x1,int x2,int y1, int y2)
	{
		int dx,dy;
		int i,j;
		dx=abs(x2-x1);
		dy=abs(y2-y1);
		if(((dx!=0)&&(dy=0))||((dy!=0)&&(dx=0)))
		{
			printf("Cannot moove- the m oove is illegall!\n");
			return 0;
		}
		else
		{
			for(i=x1+1;i<x2;i++)
			{
				if(check_if_empty(i,y2))
				{
					update_board(x1,y1,x2,y2);
					print_board();
					return 1;
				}
			}
		}
		else
		{
			for(j=y1+1;j<y2;j++)
			{
				if(check_if_empty(x1,j))
				{

					update_board(x1,y1,x2,y2);
					print_board();
					return 1;
				}
			}
		}
	}

More specifically , this is the else

You can't use 2 else statements after an if statement, line 12 should be an else if statement or another if statement after the first else, etc.

I think he just didn't notice it :)

DJSAN10 28 Posting Whiz in Training · Answer 9 · 2012-02-01T10:37:47+00:00

DJSAN10 28 Posting Whiz in Training

12 Years Ago

I think he just didn't notice it

possibly yes... :)

themenucha 0 Newbie Poster · Answer 10 · 2012-02-11T23:54:42+00:00

Hi!This Is My Code after formatting and compiling- still need some help in main function.

//Chess project//


#include <cstdlib>
#include <iostream>

using namespace std;
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
// all figures are represented as a constant integers//
//constants
// all columns are presented as an integers
#
 int board[8][8];//chess board is presented as a 2D array of int


//functions declaration
int char_to_int(char c);
void setup_board();
void print_board();
int  check_if_empty(int x2, int y2);
int pawn_moove( int x1,int x2,int y1, int y2) ;
int rook_moove(int x1,int x2,int y1, int y2);
int knight_moove(int x1,int x2,int y1, int y2);
int bishop_moove(int x1,int x2,int y1, int y2);
int queen_moove(int x1,int x2,int y1, int y2);
int king_moove(int x1,int x2,int y1, int y2);
void update_board(int x1,int y1,int x2,int y2);
char print_piece(int x, int y);
void print_board();

void setup_board()
{
     //Normal/Initial board setup
   board[0][0]=2;
   board[0][1]=3;
   board[0][2]=4;
   board[0][3]=5;
   board[0][4]=6;
   board[0][5]=4;
   board[0][6]=3;
   board[0][7]=2;
   board[1][0]=1;
   board[1][1]=1;
   board[1][2]=1;
   board[1][3]=1;
   board[1][4]=1;
   board[1][5]=1;
   board[1][6]=1;
   board[1][7]=1;
   board[2][0]=0;
   board[2][1]=0;
   board[2][2]=0;
   board[2][3]=0;
   board[2][4]=0;
   board[2][5]=0;
   board[2][6]=0;
   board[2][7]=0;
   board[3][0]=0;
   board[3][1]=0;
   board[3][2]=0;
   board[3][3]=0;
   board[3][4]=0;
   board[3][5]=0;
   board[3][6]=0;
   board[3][7]=0;
   board[4][0]=0;
   board[4][1]=0;
   board[4][2]=0;
   board[4][3]=0;
   board[4][4]=0;
   board[4][5]=0;
   board[4][6]=0;
   board[4][7]=0;
   board[5][0]=0;
   board[5][1]=0;
   board[5][2]=0;
   board[5][3]=0;
   board[5][4]=0;
   board[5][5]=0;
   board[5][6]=0;
   board[5][7]=0;
   board[6][0]=1;
   board[6][1]=1;
   board[6][2]=1;
   board[6][3]=1;
   board[6][4]=1;
   board[6][5]=1;
   board[6][6]=1;
   board[6][7]=1;
   board[7][0]=2;
   board[7][1]=3;
   board[7][2]=4;
   board[7][3]=5;
   board[7][4]=6;
   board[7][5]=4;
   board[7][6]=3;
   board[7][7]=2;
}

  int main()
{
      char c;//to convert from letter to int
      int x,y;
	int x1,x2;//for column
	int y1,y2;//for row

	setup_board();



        printf("**********************************************************\n");
		printf("Hi. Wellcome to Kirill Zemenucha's simple chess program!!!\n");

		printf("Type 'Q' to to Quit\n");
		 print_board();
		while(1)
		{


		printf("\nPlease select a starting position for a figure for instance E2  in upper case\n");

		scanf("%1s%d",&c,&y);
		if(c=='Q')//Exit chess
		                  {
                          printf("Thank you and goodbye\n");
                          return 0;
                          }
        else
        x1=char_to_int(c);
		y1=y-1;
		printf("Please select a finishing position for a figure for instance E,4\n");
		scanf("%c,%d",&c,&y);
		if(c=='Q')//Exit chess
		                  {
                          printf("Thank you and goodbye\n");
                          return 0;
                          }
		x2=char_to_int(c);
		y2=y-1;



      int choice;
      choice=board[x1][y1];

      switch(choice)
      {
                    case 1:pawn_moove(x1,y1,x2,y2);
                    break;
                    case 2:rook_moove(x1,y1,x2,y2);
                    break;
                    case 3:knight_moove(x1,y1,x2,y2);
                    break;
                    case 4:bishop_moove(x1,y1,x2,y2);
                    break;
                    case 5:queen_moove(x1,y1,x2,y2);
                    break;
                    case 6:king_moove(x1,y1,x2,y2);
                    break;
                    default:
                            printf("Wrong selection of start/finish combination\n");
                            break;

          }


		return 0;
}
}
    //Fuctions definitions
    int char_to_int(char c)
    {

        int x=0;
       if( c < 'I')
                  {
                       x=c-65;//A will be converted to 0, B to 1, etc...
                       return x;
                   }
                   else
                   {
                       printf("NOT in range!!!\n");
                   }
                                      return -x;
    }
char print_piece(int x, int y)//converts number from the board to piece character
{
   char piece = ' ';
   switch(board[x][y])
   {
      case 1:
         piece='P';
         break;
      case 2:
         piece='R';
         break;
      case 3:
         piece='N';
         break;
      case 4:
         piece='B';
         break;
      case 5:
         piece='Q';
         break;
      case 6:
         piece='K';
         break;
      default:
         piece=' ';
         break;
   }

   return piece;
}
void print_board()
{
char a8=print_piece(0,0), b8=print_piece(0,1), c8=print_piece(0,2), d8=print_piece(0,3),e8=print_piece(0,4), f8=print_piece(0,5),  g8=print_piece(0,6), h8=print_piece(0,7);
char a7=print_piece(1,0), b7=print_piece(1,1), c7=print_piece(1,2), d7=print_piece(1,3),e7=print_piece(1,4), f7=print_piece(1,5),  g7=print_piece(1,6), h7=print_piece(1,7);
char a6=print_piece(2,0), b6=print_piece(2,1), c6=print_piece(2,2), d6=print_piece(2,3),e6=print_piece(2,4), f6=print_piece(2,5),  g6=print_piece(2,6), h6=print_piece(2,7);
char a5=print_piece(3,0), b5=print_piece(3,1), c5=print_piece(3,2), d5=print_piece(3,3),e5=print_piece(3,4), f5=print_piece(3,5),  g5=print_piece(3,6), h5=print_piece(3,7);
char a4=print_piece(4,0), b4=print_piece(4,1), c4=print_piece(4,2), d4=print_piece(4,3),e4=print_piece(4,4), f4=print_piece(4,5),  g4=print_piece(4,6), h4=print_piece(4,7);
char a3=print_piece(5,0), b3=print_piece(5,1), c3=print_piece(5,2), d3=print_piece(5,3),e3=print_piece(5,4), f3=print_piece(5,5),  g3=print_piece(5,6), h3=print_piece(5,7);
char a2=print_piece(6,0), b2=print_piece(6,1), c2=print_piece(6,2), d2=print_piece(6,3),e2=print_piece(6,4), f2=print_piece(6,5),  g2=print_piece(6,6), h2=print_piece(6,7);
char a1=print_piece(7,0), b1=print_piece(7,1), c1=print_piece(7,2), d1=print_piece(7,3),e1=print_piece(7,4), f1=print_piece(7,5),  g1=print_piece(7,6), h1=print_piece(7,7);

printf("   +---+---+---+---+---+---+---+---+");
printf("\n");
printf("8  | %c | %c | %c | %c | %c | %c | %c | %c |",a8,b8,c8,d8,e8,f8,g8,h8);
printf("\n");
printf("   +---+---+---+---+---+---+---+---+");
printf("\n");
printf("7  | %c | %c | %c | %c | %c | %c | %c | %c |",a7,b7,c7,d7,e7,f8,g7,h7);
printf("\n");
printf("   +---+---+---+---+---+---+---+---+");
printf("\n");
printf("6  | %c | %c | %c | %c | %c | %c | %c | %c |",a6,b6,c6,d6,e6,f6,g6,h6);
printf("\n");
printf("   +---+---+---+---+---+---+---+---+");
printf("\n");
printf("5  | %c | %c | %c | %c | %c | %c | %c | %c |",a5,b5,c5,d5,e5,f5,g5,h5);
printf("\n");
printf("   +---+---+---+---+---+---+---+---+");
printf("\n");
printf("4  | %c | %c | %c | %c | %c | %c | %c | %c |",a4,b4,c4,d4,e4,f4,g4,h4);
printf("\n");
printf("   +---+---+---+---+---+---+---+---+");
printf("\n");
printf("3  | %c | %c | %c | %c | %c | %c | %c | %c |",a3,b3,c3,d3,e3,f3,g3,h3);
printf("\n");
printf("   +---+---+---+---+---+---+---+---+");
printf("\n");
printf("2  | %c | %c | %c | %c | %c | %c | %c | %c |",a2,b2,c2,d2,e2,f2,g2,h2);
printf("\n");
printf("   +---+---+---+---+---+---+---+---+");
printf("\n");
printf("1  | %c | %c | %c | %c | %c | %c | %c | %c |",a1,b1,c1,d1,e1,f1,g1,h1);
printf("\n");
printf("   +---+---+---+---+---+---+---+---+");
printf("\n");
printf("     A   B   C   D   E   F   G   H   ");
printf("\n");

}

  //Function's definitions
  int  check_if_empty(int x2, int y2)//if board[x2][y2]=0 it's empty
{
	if(board[x2][y2]> 0)
	{
		printf("The place is not empty\n");
		return 0;
	}
	else
	return 1;
}
void  update_board(int x1,int x2,int y1, int y2)
{
      board[x2][y2]=board[x1][y1];
      board[x1][y1]=0;
      return;
      }

int pawn_moove(int x1,int x2,int y1, int y2)
{
    int dx,dy;
    dx=abs(x2-x1);
    dy=abs(y2-y1);
    if((dx!=0)&&(dy>2))
                     {
                     printf("Cannot moove- the moove is illegall!\n");
                     return 0;
                     }
                     else
                     {
                         if((check_if_empty(x1,y1+1)||(check_if_empty(x2,y2))))
                         {
                     update_board(x1,y1,x2,y2);
                     print_board();
                     return 1;
                         }
                     }
                     return 1;
}
int rook_moove(int x1,int x2,int y1, int y2)
{
		int dx,dy;
		int i,j;
		dx=abs(x2-x1);
		dy=abs(y2-y1);
		if(dx==0)//vertical move
		          {
                            for(j=y1+1;j<y2;j++)
			               {
			             	if(check_if_empty(x1,j))
				               {
 				                	update_board(x1,y1,x2,y2);
				                 	print_board();
				                	return 1;
                                 }
                            }
                 }
          else if(dy==0)//horizontal move
              {
		         	for(i=x1+1;i<x2;i++)
		             	{
			            	if(check_if_empty(i,y2))
				             {
				            	update_board(x1,y1,x2,y2);
				            	print_board();
				            	return 1;
			                 }
                        }
	    	}

          else
			printf("Cannot moove- the m oove is illegall!\n");
			return 0;
}

 int knight_moove(int x1,int x2,int y1, int y2)
{
    int dx,dy;
    dx=abs(x2-x1);
    dy=abs(y2-y1);
    if (((dx==1 && dy==2)&&(check_if_empty(x2,y2)) || (dx==2 && dy==1)&&(check_if_empty(x2,y2))))
                                {
                                update_board(x1,y1,x2,y2);
				            	print_board();
				            	return 1;
                                }
                                else
                                printf("Cannot moove- the moove is illegall!\n");
                                return 0;

}
int bishop_moove(int x1,int x2,int y1, int y2)
{
    int i,j;
    int dx,dy;
    dx=abs(x2-x1);
    dy=abs(y2-y1);
    if(dx!=dy)//if not diagonal move
          {
           printf("Cannot moove- the moove is illegall!\n");
           return 0;
          }
                    else
                        {
                         for(i=x1+1,j=y1+1;i<x2,j<y2;i++,j++)
                                  {
                                    if(check_if_empty(i,j));
                                  }
                        }
                          update_board(x1,y1,x2,y2);
                          print_board();
                          return 1;
}
  int queen_moove(int x1,int x2,int y1, int y2)
  {
      int i,j;
      int dx,dy;
      dx=abs(x2-x1);
      dy=abs(y2-y1);
                     if(dx==dy)
                       for(i=x1+1,j=y1+1;i<x2,j<y2;i++,j++)

                           {
                             if(check_if_empty(i,j));
                               {
                                update_board(x1,y1,x2,y2);
                                print_board();
                                return 1;
                               }
                            }
                         else if(dy==0)
                          {
                             for(i=x1+1;i<x2;i++)
                               {
                                 if(check_if_empty(i,y2));
                                update_board(x1,y1,x2,y2);
                                print_board();
                                return 1;
                                }
                          }
                         else if(dx==0)
                           {
                              for(j=y1+1;j<y2;j++)
                                 {
                                    if(check_if_empty(x1,j));
                                    update_board(x1,y1,x2,y2);
                                    print_board();
                                     return 1;
                                  }
                            }
                            else
                            {
                               printf("Cannot moove- the moove is illegall!\n");
                               return 0;
                            }
                            return 1;
}
     int king_moove(int x1,int x2,int y1, int y2)
{
    int dx,dy;
    dx=abs(x2-x1);
    dy=abs(y2-y1);
    if (((dx==1) && (dy<=1)) || ((dx<=1) && (dy==1)))
             {
                            if(check_if_empty(x2,y2));
                            update_board(x1,y1,x2,y2);
                            print_board();
                            return 1;
             }
             else
                 {
                   printf("Cannot moove- the moove is illegall!\n");
                    return 0;
                  }
}

thanx,guys

DJSAN10 28 Posting Whiz in Training · Answer 11 · 2012-02-13T11:53:02+00:00

Hi!This Is My Code after formatting and compiling- still need some help in main function.

What help do you exactly need ? Is your code working now or are there still any compiler errors. If so, post them too

themenucha 0 Newbie Poster · Answer 12 · 2012-02-13T14:05:23+00:00

What help do you exactly need ? Is your code working now or are there still any compiler errors. If so, post them too

Hi! There is no compilation errors, but the program itself is not working. I checked my main funcs and they seems to be working.I cant't find my bug...
All I nee is
1.Get start position (E2 for example)
2.Get finish(E4)
3.Check legality
4.Move the piece and display
My problem is not a compilation but the main itself.
I'm using CodeBlocks.
Maybe it's because i have nested functions?
Thanx

DJSAN10 28 Posting Whiz in Training · Answer 13 · 2012-02-13T14:30:20+00:00

printf("\nPlease select a starting position for a figure for instance E2 in upper case\n");
scanf("%1s%d",&c,&y);

Might be a problem here. Try printing values of c and y and see if you are getting proper values. I suppose it is because you are giving your input as E2 rather than E 2. Also use %c for c

themenucha 0 Newbie Poster · Answer 14 · 2012-02-13T15:19:27+00:00

In starting position im getting a proper values
E2
c->E
x->4
y->2
but in finishing position i'm getting
c1->4
x->2
y->-55
why??

DJSAN10 28 Posting Whiz in Training · Answer 15 · 2012-02-13T15:27:16+00:00

In starting position im getting a proper values
E2
c->E
x->4
y->2
but in finishing position i'm getting
c1->4
x->2
y->-55
why??

What did you input as finishing position.

themenucha 0 Newbie Poster · Answer 16 · 2012-02-13T15:36:41+00:00

I removed it: still the values are not proper

printf("\nPlease select a starting position for a figure for instance E2  in upper case\n");

		scanf("%c %d",&c,&y);
		printf("%c\n",c);
		if(c=='Q')//Exit chess
		                  {
                          printf("Thank you and goodbye\n");
                          return 0;
                          }
        else
        x1=char_to_int(c);
        printf("%d\n",x1);
         printf("%d\n",y);
		y1=y-1;
		printf("Please select a finishing position for a figure for instance E,4\n");
		scanf("%c %d",&c1,&y0);
		printf("%c\n",c1);
				if(c=='Q')//Exit chess
		                  {
                          printf("Thank you and goodbye\n");
                          return 0;
                          }
         else
		x2=char_to_int(c1);
		 printf("%d\n",x2);
         printf("%d\n",y1);
		y2=y1-1;



      int choice;
      choice=board[x1][y1];

      switch(choice)
      {
                    case 1:pawn_moove(x1,y1,x2,y2);
                    break;
                    case 2:rook_moove(x1,y1,x2,y2);
                    break;
                    case 3:knight_moove(x1,y1,x2,y2);
                    break;
                    case 4:bishop_moove(x1,y1,x2,y2);
                    break;
                    case 5:queen_moove(x1,y1,x2,y2);
                    break;
                    case 6:king_moove(x1,y1,x2,y2);
                    break;
                    default:
                            printf("Wrong selection of start/finish combination\n");
                            break;

          }


		return 0;
}
}

DJSAN10 28 Posting Whiz in Training · Answer 17 · 2012-02-13T15:42:07+00:00

I think you are giving the wrong input here. E,4 or E4. Post EXACTLY what input you have given and the exact output that you have got. Also ,no space here : use

scanf("%c%d",&c,&y);

DJSAN10 28 Posting Whiz in Training · Answer 18 · 2012-02-13T15:43:53+00:00

Next (although not related to your problem but what you have done is bad programming) : For setup_board() , use for loop ,don't assign values individually

themenucha 0 Newbie Poster · Answer 19 · 2012-02-13T16:27:02+00:00

i modified
else cases
but still im getting wrong values

printf("\nPlease select a starting position for a figure for instance E2  in upper case\n");

		 scanf("%c%d",&c,&y);
		printf("%c\n",c);
		if(c=='Q')//Exit chess
		                  {
                          printf("Thank you and goodbye\n");
                          return 0;
                          }
        else
        {
        x1=char_to_int(c);
        printf("%d\n",x1);
         printf("%d\n",y);
		y1=y-1;
        }
		printf("Please select a finishing position for a figure for instance E,4\n");

		 scanf("%c%d",&c1,&y0);
		printf("%c\n",c1);
				if(c1=='Q')//Exit chess
		                  {
                          printf("Thank you and goodbye\n");
                          return 0;
                          }
         else
         {
		 x2=char_to_int(c1);
		 printf("%d\n",x2);
         printf("%d\n",y0);
         y2=y-1;
         }

c-> (empty char)
x->-55
y->4226819
Maybe there is a need to initialize all values?

DJSAN10 28 Posting Whiz in Training · Answer 20 · 2012-02-13T16:47:23+00:00

Okay, LISTEN.

printf("Please select a finishing position for a figure for instance E,4\n");

Tell me what input you are giving after this statement. Are you giving it as E4 or E,4 or E 4. i want to know that

themenucha 0 Newbie Poster · Answer 21 · 2012-02-13T17:24:04+00:00

im giving E2 AND E4
I tried also E 2 E4 no difference/
Im stucked

DJSAN10 28 Posting Whiz in Training · Answer 22 · 2012-02-13T17:27:15+00:00

Ok so here is where you are stuck. How will scanf identify E and 2 are different characters when you enter E2. The problem is in the way you are giving your input. You should :
E<Press Enter>
2<Press Enter>

Similarly,
E<Press Enter>
4<Press Enter>

themenucha 0 Newbie Poster · Answer 23 · 2012-02-13T18:23:29+00:00

I tried to scan the separately:
But still, second scanf(finishing position) bugs...

printf("\nPlease select a starting position for a figure for instance E2  in upper case\n");

		 scanf("%c",&c);
		  scanf("%d",&y);
		printf("%c\n",c);
		if(c=='Q')//Exit chess
		                  {
                          printf("Thank you and goodbye\n");
                          return 0;
                          }
        else
        {
        x1=char_to_int(c);
        printf("%d\n",x1);
         printf("%d\n",y);
		y1=y-1;
        }
		printf("Please select a finishing position for a figure for instance E,4\n");

		 scanf("%c",&c);
		  scanf("%d",&y);
		printf("%c\n",c);
				if(c=='Q')//Exit chess
		                  {
                          printf("Thank you and goodbye\n");
                          return 0;
                          }
         else
         {
		 x2=char_to_int(c);
		 printf("%d\n",x2);
         printf("%d\n",y);
         y2=y-1;
         }

DJSAN10 28 Posting Whiz in Training · Answer 24 · 2012-02-13T18:26:18+00:00

I didn't mean you separate the scanfs. Anyways did you enter your input as told. Give a number, press enter, give a number, press enter, and so on

themenucha 0 Newbie Poster · Answer 25 · 2012-02-13T18:28:18+00:00

YES
E<Press Enter>
2<Press Enter>

Similarly,
E<Press Enter>
4<Press Enter>
second scanf bugs

themenucha 0 Newbie Poster · Answer 26 · 2012-02-13T18:37:14+00:00

E<Press Enter>
2<Press Enter>

c-> E
x->-4
y->2
//SECOND INPUT
E<Press Enter>
c-> (empty char)
x->-55
y->2
//THIS JUMPS AFTER FIRST ENTER
//
4<Press Enter>

HELP in chess project in C

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