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

void print_reverse(char *s)
{
        size_t len = strlen(s);
        char *t = s + len - 1;
        while(t >= s) {
                printf("%c", *t);
                t = t - 1;
        }
        puts("");
}

int main(void) {
        char *hello = "Hello, World";

        print_reverse(hello);

        return 0;
}