C: is palindrome

ispaldrm.c

#include <stdio.h>

#define palsize 100

/*
 * Returns 1 if is a pure palindrome.
 * The name is a bit mangled up because good C code shouldn't be understandable.
 */
int ispaldrm(char* s)
{
    char *a = s, *b = s;
    while (*b) {
        b++;
    }
    b -= 1;
    while (a < b) {
        if (*a++ != *b--) {
            return 0;
        }
    }
    return 1;
}

int main()
{
    char s[palsize];
    gets(s);
    if (ispaldrm(s)) {
        puts("Well, yes");
    } else {
        puts("Nope");
    }
    return 0;
}

gets is dangerous and the compiler might complain but I'm putting it for sake of simplicity against scanf("%s", s);