/*
Summary: Palindromes are words or phrases that read the same in both directions.
*/
#include<stdio.h>
#include<string.h>
#include<conio.h>
char *strrev(char *str)
{
char *p1, *p2;
if (! str || ! *str)
return str;
for (p1 = str, p2 = str + strlen(str) - 1; p2 > p1; ++p1, --p2)
{
*p1 ^= *p2;
*p2 ^= *p1;
*p1 ^= *p2;
}
return str;
}
int main()
{
char a[100], b[100];
//Get the number from user.
printf("Enter the string to check if it is a palindrome\n");
gets(a);
//copy input to another array b
strcpy(b,a);
//Reverse it.
strrev(b);
/*Compare it with the number entered by the user.If both are same then print palindrome number*/
if( strcmp(a,b) == 0 )
printf("\nEntered string is a palindrome.\n");
else
printf("\nEntered string is not a palindrome.\n");
getch();
return 0;
}
_______________________________OUPUT______________________________
Enter the string to check if it is a palindrome
asad
Entered string is not a palindrome.
