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/*
* Interactive guessing game.
* This is free and unencumbered software released into the public domain.
*/
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "stack.h"
char *random10(char *c)
{
char *p = malloc(sizeof(char));
*p = rand() % 10;
while (c != NULL && *p == *c) {
free(p);
p = malloc(sizeof(char));
*p = rand() % 10;
}
return p;
}
int main()
{
stack *s = mkstack();
char guess, lost = 0;
srand(time(NULL));
stack_push(s, random10(NULL));
STEP2:
stack_push(s, random10(stack_top(s)));
char *p = stack_pop(s);
puts(lost ? "Make another guess between 0 and 9"
: "Make a guess between 0 and 9");
scanf("%hhd", &guess);
if ((guess - *p) * (guess - *(char *) stack_top(s)) < 0) {
puts("YOU WIN!");
return 0;
} else if (lost) {
puts("YOU LOSE!");
return 0;
}
lost = 1;
goto STEP2;
}
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