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Feb 26th, 2009

problem with stacks -in C

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how to use push and pop here???

thanks!

(Toggle Plain Text)
C Syntax (Toggle Plain Text)
#include<stdio.h>
#include<stdlib.h>
 
void push(char palindrome[20], int *top, int value)
{
	if(*top<=10)
	{
		palindrome[*top]=value;
		*top++;
	}
	else
	{
		printf("Stack is full!!");
		exit(0);
	}
 
}
 
int value;
void pop(char palindrome[10], int *top)
{
	if(*top>=0)
	{
		value=palindrome[*top];
		*top=*top-1;
	}
	else
	{
		printf("The stack is empty!!\n");
	}
}
 
char palindrome[10];
int top = -1;
int value;
int x;
 
void main()
{
	clrscr();
	printf("Enter word: ");
	scanf("%s",&value);
 
	for(top=0;palindrome[top]!=x;top++)
	{
	}
	top--;
 
	for(value=0;palindrome[value]!=x;value++,top--)
	{
		if(palindrome[top]!=palindrome[value])
		x=1;
	}
	if(x==0)
	{
		printf("The word you've entered is a palindrome!!\n");
	}
	else
	{
		printf("The word you've entered is not a palindrome!!\n");
	}
	getch();
}
#include<stdio.h>
#include<stdlib.h>

void push(char palindrome[20], int *top, int value)
{
	if(*top<=10)
	{
		palindrome[*top]=value;
		*top++;
	}
	else
	{
		printf("Stack is full!!");
		exit(0);
	}

}

int value;
void pop(char palindrome[10], int *top)
{
	if(*top>=0)
	{
		value=palindrome[*top];
		*top=*top-1;
	}
	else
	{
		printf("The stack is empty!!\n");
	}
}

char palindrome[10];
int top = -1;
int value;
int x;

void main()
{
	clrscr();
	printf("Enter word: ");
	scanf("%s",&value);

	for(top=0;palindrome[top]!=x;top++)
	{
	}
	top--;

	for(value=0;palindrome[value]!=x;value++,top--)
	{
		if(palindrome[top]!=palindrome[value])
		x=1;
	}
	if(x==0)
	{
		printf("The word you've entered is a palindrome!!\n");
	}
	else
	{
		printf("The word you've entered is not a palindrome!!\n");
	}
	getch();
}
    C Syntax (Toggle Plain Text)  #include<stdio.h>#include<stdlib.h> void push(char palindrome[20], int *top, int value){	if(*top<=10)	{		palindrome[*top]=value;		*top++;	}	else	{		printf("Stack is full!!");		exit(0);	} } int value;void pop(char palindrome[10], int *top){	if(*top>=0)	{		value=palindrome[*top];		*top=*top-1;	}	else	{		printf("The stack is empty!!\n");	}} char palindrome[10];int top = -1;int value;int x; void main(){	clrscr();	printf("Enter word: ");	scanf("%s",&value); 	for(top=0;palindrome[top]!=x;top++)	{	}	top--; 	for(value=0;palindrome[value]!=x;value++,top--)	{		if(palindrome[top]!=palindrome[value])		x=1;	}	if(x==0)	{		printf("The word you've entered is a palindrome!!\n");	}	else	{		printf("The word you've entered is not a palindrome!!\n");	}	getch();} #include<stdio.h>
#include<stdlib.h>

void push(char palindrome[20], int *top, int value)
{
	if(*top<=10)
	{
		palindrome[*top]=value;
		*top++;
	}
	else
	{
		printf("Stack is full!!");
		exit(0);
	}

}

int value;
void pop(char palindrome[10], int *top)
{
	if(*top>=0)
	{
		value=palindrome[*top];
		*top=*top-1;
	}
	else
	{
		printf("The stack is empty!!\n");
	}
}

char palindrome[10];
int top = -1;
int value;
int x;

void main()
{
	clrscr();
	printf("Enter word: ");
	scanf("%s",&value);

	for(top=0;palindrome[top]!=x;top++)
	{
	}
	top--;

	for(value=0;palindrome[value]!=x;value++,top--)
	{
		if(palindrome[top]!=palindrome[value])
		x=1;
	}
	if(x==0)
	{
		printf("The word you've entered is a palindrome!!\n");
	}
	else
	{
		printf("The word you've entered is not a palindrome!!\n");
	}
	getch();
} 

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abby2589

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since Jan 2009

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Feb 26th, 2009

Re: problem with stacks -in C

Perhaps be more specific... what exactly is it that you want to know?

William Hemsworth

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Posting Virtuoso

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since Mar 2008

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Feb 26th, 2009

Re: problem with stacks -in C

i want to know how to use stacks in this program

abby2589

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since Jan 2009

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Feb 26th, 2009

Re: problem with stacks -in C

You never initialized the value of x. When is the loop supposed to stop? Stopping at the null character '\0' might be a good idea... Also, you can't have both the loop and and function keeping track of top. You can use a while loop to go through the string and push will modify top for you.

death_oclock

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Posting Whiz

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since Apr 2006

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Feb 27th, 2009

Re: problem with stacks -in C

Look abby2589 ,

I didn't read all your code but from the general idea of the code i assume that you want to know how to use the stack to check if the word is palindrome or not.

- After you enter the string you will push all of its element from the first character till the end of the string (Using a Pointer ofcourse till the Pointer Reaches NULL).

-Then Pop all the elements from the stack and recieve them in another string.

-And compare the newly created string to the original string that been entered at the first of your program.

Ahmed_I

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