please check for me the error and tell me~~ thx!

[anzdyy]

Write a complete C program to perform Matrix operations such as Addition, Subtraction, Multiplication and Transpose according to the user’s choice. The program should display the following menu to the user for them to select one of the five options listed.

------------------
MAIN MENU
------------------
1. MATRIX ADDITION
2. MATRIX SUBTRACTION
3. MATRIX MLTIPLICATION
4. MATRIX TRANSPOSE
5. TO EXIT
---------------------------
Please enter your option <1/2/3/4/5>:

The program should ask the elements of the input matrix or matrices from the user once the required operation is selected. The program should produce a neat output showing both the input and the resultant matrix in matrix form. The program should not be terminated until the user selects the option number 5 (TO EXIT).

THIS IS THE PROGRAM I HAVE DONE.. URGENT PLEASE CORRECT FOR ME! THANKS A LOT!!!!

#include <stdio.h> /* This header file is for C language */
#include <stdlib.h> /* for the exit() function */

/*Function prototype*/
int matrix_add(int a[3][3],int b[3][3],int result[3][3]);
int matrix_subtract(int a[3][3],int b[3][3],int result[3][3]);
int matrix_multiply(int a[3][3],int b[3][3],int result[3][3]);
int matrix_transpose(int a[3][3], int result[3][3]);
int print_matrix(int c[3][3]);

int main()
{
    int counter = 0; /* initialize counter */
    int option;/*initialize options available*/
    int a[3][3]; 
    int b[3][3]; 
    int c[3][3];
    
/*Print the operations that to be performed*/

    printf(" Welcome to User Menu of Matrix Operations\n\n");
    printf("--------------------------------------------\n");
    printf("\t\tMAIN MENU\n");
    printf("--------------------------------------------\n");
    printf("\t1. MATRIX ADDITION\n");
    printf("\t2. MATRIX SUBTRACTION\n");
    printf("\t3. MATRIX MULTIPLICATION\n");
    printf("\t4. MATRIX TRANSPOSE\n");
    printf("\t5. TO EXIT\n");
    printf("--------------------------------------------\n");
    printf("Please enter your option <1/2/3/4/5>:\n");
    
/*Print the input matrices & output*/  
{ 
   printf("\nMatrix 1:\n");
   print_matrix(a); 
      
   printf("\nMatrix 2:\n");
   print_matrix(b);

   printf("\nResult:\n");
   print_matrix(c);
} 


/*As buffer*/

while (counter==0)
{
/* Get the option*/
    if (option==1) 
    {
     matrix_add(a,b,c);
    }
    else if (option==2) 
    {
     matrix_subtract(a,b,c);   
    }
    else if (option==3)
    {
    matrix_multiply(a,b,c);
    }   
    else if (option==4)
    {  
    matrix_transpose(a,c);
    }
    else
    {
        exit( 1 );
    }

/*Get the input for two matrices*/
/*Suppose the option is transpose, the input is one matrice*/
   
    
/*Switch case for each operation*/  
   switch (matrix_operations)
   
   { 
           case 1:/*addition function*/
           {
           printf("Enter elements of Matrix 1:\n");
           scanf("%d",& int a[3][3]);
           printf("Enter elements of Matrix 2:\n");
           scanf("%d",& int b[3][3]);
           matrix_add(a,b,c)
           }
               break; 
           case 2:/*subtraction function*/
           {
           printf("Enter elements of Matrix 1:\n");
           scanf("%d",& int a[3][3]);
           printf("Enter elements of Matrix 2:\n");
           scanf("%d",& int b[3][3]);
           matrix_subtract(a,b,c)
           }
               break; 
           case 3:/*multiplication function*/
           {
           printf("Enter elements of Matrix 1:\n");
           scanf("%d",& int a[3][3]);
           printf("Enter elements of Matrix 2:\n");
           scanf("%d",& int b[3][3]);
           matrix_multiply(a,b,c)
           }
               break; 
           case 4:/*transpose function*/
           {
           printf("Enter elements of Matrix 1:\n");
           scanf("%d",& int a[3][3]);
           matrix_transpose(a,c) 
           }
               break; 
           default: 
           {
           printf("End of Program!\n");  
           exit( 1 );
           }
                    
    } 

system("pause");
return 0;   
}

/*Function definition*/
int matrix_add(int a[3][3], int b[3][3], int result[3][3])
{
   int i, j;
   for(i=0; i<3; i++)
   {
	 for(j=0; j<3; j++)
	 {
	    result[i][j] = a[i][j] + b[i][j];
	 }
   }
   return (a+b);
} 

int matrix_subtract(int a[3][3],int b[3][3], int result[3][3])
{
     int i,j;
     for (i=0;i<3;i++)
     {
         for(j=0;j<3;j++)
         {
           result[i][j]= a[i][j]- b[i][j];
         }
     }
     return (a-b);
}

int matrix_multiply(a[3][3],b[3][3],int result[3][3])
{ 
     int i,j,k;
     {
     for (i = 0; i < n; i++)
                  for (j = 0; j < n; j++)
                        for (k = a[i][j] = 0; k < n; k++)
                        {
                             result[i][j] += b[i][k] * c[k][j];
                        }
     }
     return (a*b);
}

int matrix_transpose(int a[3][3],int result[3][3])
{
     int i,j,n,temp;
     {
     for (i = 0; i < n-1; i++)
                  for (j = i+1; j < n; j++)
                  {
                        temp = b[i][j];
                        b[i][j] = b[j][i];
                        b[j][i] = temp;
                  }
     }
     return (b);
}
int print_matrix(int c[3][3])
{
   int i, j;
   for (i=0; i<3; i++)
   {
	 for (j=0; j<3; j++)
	 {
	    printf("%d\t", a[i][j]);
	 }
	 printf("\n");
   }
}
}

[Narue]

>URGENT PLEASE CORRECT FOR ME! THANKS A LOT!!!!
You'll get better results if you describe the problems that you're having.

[John A]

And this has exactly what to do with Linux?

[Salem]

Looks like a direct rip-off of this post as well, right down to the syntax errors.
http://www.daniweb.com/forums/post428174-13.html

Almost certainly in the same class, could even be the same person registering with a new account hoping the "clean" noob status will garner a bit of extra sympathy / effort on our part.