REVERSE THE STRING USING THE STACK

DOWNLOAD PROGRAM

CODING:
#include<stdio.h>
#include<conio.h>
#include<string.h>
#define max 50
char string[max];
int top=-1;
void push(char a);
char pop();
void main()
{
char str[50];
int i;
clrscr();
printf("ENTER THE VALID CHARCTER STRING:");
gets(str);
for(i=0;i<strlen(str);i++)
 push(str[i]);
for(i=0;i<strlen(str);i++)
 str[i]=pop();
printf("REVERSED STRING...");
puts(str);
getch();
}
void push(char s)
{
if(top==(max-1))
{
 printf("STACK IS OVERFLOW...");
}
string[++top]=s;
}
char pop()
{
if(top==-1)
{
 printf("STACK IS UNDERFLOW...");
}
return string[top--];
}