Guess.cpp

#include <iostream>
#include <string.h>

void guessNumber();
bool isSolution(int);
bool tooHigh(int);

int main() {
    guessNumber();
}

void guessNumber() {
    int currentGuess = 100;
    while(!isSolution(currentGuess)) {
        if(tooHigh(currentGuess)) {
            currentGuess /= 2;
        } else {
            currentGuess *= 1.5;
        }
    }
}

bool isSolution(int number) {
    std::string answer;
    while(answer != "y" && answer != "n") {
        std::cout << "Is " << number << " you're number?[y/n] ";
        std::getline(std::cin, answer);
    }
    return answer == "y";
}

bool tooHigh(int number) {
    std::string answer;
    while(answer != "h" && answer != "l") {
        std::cout << "Is " << number << " too high, or too low?[h/l] ";
        std::getline(std::cin, answer);
    }
    return answer == "h";
}