Program for Palindrome Number

/*
Write a program in C for palindrome number
*/
 
#include <stdio.h>
#include <string.h>

main()
{
char a[100], b[100];

printf("Enter the string to check if it is a palindrome\n");
gets(a);

strcpy(b,a);
strrev(b);

if( strcmp(a,b) == 0 )
printf("Entered string is a palindrome.\n");
else
printf("Entered string is not a palindrome.\n");

return 0;
}