c program to check if a string is palindrome or not

Palindrome

A string which reads the same, when it is read forward and backward is called a palindrome.

Eg - ANNA

Explanation of the program

This program reads a string as input, checks whether it is palindrome or not and prints the result. Initially the variable i is set to 0. Input string is read into character array a[]. The length of the string if found by using the string handling function strlen() and is stored in the variable j. Now the values at a[i] and a[j] is compared in the while loop, at each iteration, the value of i is incremented and the value of j is decremented. At each iteration, if the value of a[i] and [j] are equal then the string is palindrome, otherwise the string is not palindrome. 

Program

//palindrome program in c

#include<stdio.h>

#include<conio.h>

#include<string.h>

void main()

{

clrscr();

int flag=0,i=0,j;

char a[10];

printf("Enter the string\n");

scanf("%s",a);

j=strlen(a)-1;

while(a[i]!='\0' && j>=0)

{

if(a[i]!=a[j])

{

flag=1;

printf("Not palindrome");

break;

}

i++;

j--;

}

if(flag==0)

{

printf("palindrome");

}

getch();

}

Output

C program to check whether a string is palindrome