UVa 10530 - Guessing Game (use a 1D flag array)

Link: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=17&page=show_problem&problem=1471

Sol: 

#include <cstdio>
	#include <string.h>
	int main()
	{
	int max, min, guess;
	bool valid;
	char input[12];
	max = 11;
	min = 0;
	valid = true;
	while (scanf("%d", &guess), guess)
	{
	scanf("%*s %s", input);
	if (strcmp(input, "high") == 0)
	{
	if (guess <= min)
	valid = false;
	if (guess < max)
	max = guess;
	}
	else if (strcmp(input, "low") == 0)
	{
	if (guess >= max)
	valid = false;
	if (guess > min)
	min = guess;
	}
	else
	{
	if (guess > min && guess < max && valid)
	{
	printf("Stan may be honest\n");
	}
	else
	{
	printf("Stan is dishonest\n");
	}
	valid = true;
	min = 0;
	max = 11;
	}
	}
	}