/* String Palindrome - Program to check whether a given string is a palindrome or not - May 2013*/

#include  <stdio.h>
#include  <conio.h>
#include  <ctype.h>
#include  <string.h>

void main()
{
    char  str[50] ;
    int i, j, length, flag ;
    clrscr() ;
    printf("Enter a string: ") ;
    gets(str) ;
    length=strlen(str) ;
    flag=1 ;   /* assuming that the string is a palindrome */
    i=0 ;
    j=length-1 ;
    while(i<length/2)
        if( tolower(str[i]) == tolower(str[j]) )
            {
                i++ ;
                j-- ;
            }
        else
            {
                flag=0 ;
                break ;
            }
    if(flag==1)
        printf("String %s is a palindrome", str) ;
    else
        printf("String %s is not a palindrome", str) ;
    getch() ;
}

/*
Output1:

Enter a string: Maam
String Maam is a palindrome

Output2:

Enter a string: Madam
String Madam is a palindrome

Output3:

Enter a string: apple
String apple is not a palindrome
*/