在此C ++代码中我在做什么错？

Question

#include <cstdlib>
#include <ctime>
#include <iostream>

int main()
{
    bool newgame;

    std::cout << " Ready to waste more family money gambling? y/n ";
    std::cin >> newgame;
    if (newgame = "n")
    {       
        newgame = false;
        return(123);
    }
    else if (newgame = "y")
    {
        srand(time(NULL));
        int number = rand() % 10;
        int guess;
        std::cout << "Pick your number ";
        std::cin >> guess;
        if (guess == number)
        {
           std::cout << "Winner!";
        }

        else
        {
           std::cout << "Loser!";
        }
    }
}

I don't understand what I've done wrong here, all that happens is the command prompt closes after I type either "y" or "n". I've tried everything, from changing the loop types, to even rearranging the code, but everything I try is fruitless.

Answer 1

a bool can only hold the values 0 or 1 (true or false). Try changing newgame to a char . Also, you're using assignment ( = ) instead of equality ( == ).

Also, if you're trying to loop (as I think you implied in your question) you'll want to wrap everything outside your variable declarations in a do...while loop.

Answer 2

The problem is that == is the operator for equality, not = which is for assignment. What is happening is that this part here,

if (newgame = "n")

{       newgame = false;
        return(123);
}

Is executing and exiting with 123. Booleans do not store "yes" and "no" values, they store 1 for true, and 0 for false.

Answer 3

看起来不太近，但我看到很多if blah =的东西，我认为您可能想使用==而不是=，=在if语句中执行赋值==进行比较