// an old joke which happens that a machine is better at telling it. Happy Eid.

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

int strcmp_casei(char const *a, char const *b);

int main()
{
    char *left = NULL;
    size_t n;

    do {
        printf("Eid and Saeed went up the mountain."
                "Saeed went down, who is left?\n");
        getline(&left, &n, stdin);
    } while (strcmp_casei(left, "Eid\n") == 0);

    return 0;
}

int strcmp_casei(char const *a, char const *b)
{
    for (;; a++, b++) {
        int d = tolower(*a) - tolower(*b);
        if (d != 0 || !*a)
            return d;
    }

    return 0;
}