C Program to check whether the string is Palindrome or not

 #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;
  }