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#include <stdio.h>
#include <ctype.h>
int main(voID)
{
int high = 100;
int low = 1;
int guess = (high + low) / 2;
char response;
printf("Pick an integer from 1 to 100.");
printf("it.\nRespond with a y if my guess is right, with");
printf("\na h if it is high, and with an l if it is low.\n");
printf("Your number %d?\n", guess);
while ((response = getchar()) != 'y') /* get response */
{
if (response == '\n')
continue;
if (response != 'h' && response != 'l')
{
printf("Please enter h for high, l for low, or y for correct.\n");
continue;
}
if (response == 'h')
high = guess - 1;
else if (response == 'l')
low = guess + 1;
guess = (high + low) / 2;
printf("Well, then, is it %d?\n", guess);
}
printf("from yiibai.com!\n");
return 0;
}
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