Answer to Question #292177 in C++ for ali

Question

Create a program that asks the user a series of questions that begin, “Is your number bigger than…” in order to deduce what integer between 1 and 100 they are thinking of. The user should only be able to answer ‘y’ or ‘n’ to each question. (Hint: each time round the loop, you should be seeking to halve the range in which number could lie, so store an upper bound and a lower bound, and change one or the other according to the user’s answers).

Answer 1

#include <iostream>


int main()
{
    
    int lower = 0;
    int higher = 100;
    int res = 0;
    while (higher !=lower)
    {
        char answer[2]="";
        std::cout << "Is your number bigger than " << (lower + higher) / 2 << "\nEnter y or n : ";
        std::cin.getline(answer, 2);
        if (answer[0] == 'y')
        {
            lower = (lower + higher) / 2+1;
        }
        else if (answer[0] == 'n')
        {
            higher = (lower + higher) / 2;
        }
        res = higher;
    }
    std::cout << "Your digit is :" << res << std::endl;


    system("pause");
    return 0;
}