c++ - For循环——魔数(Magic Number)程序

Question

我应该做哪些更改，以便此代码的用户可以猜测他们选择的魔数(Magic Number)的数量，并有三种不同的机会来猜测每个魔数(Magic Number)？我也对要更改的内容感到困惑，以便一旦用户正确猜测了魔数(Magic Number)，魔数(Magic Number)就可以改变。

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

using namespace std;

int main()

{

    int magic; // This is a random number between 1 and 20

    int guess; // This is the guess number being attempted (up to 3 guesses)

    int magicguesses; // This is the amount of magic numbers being guessed attempted

    int i;

    int number; // This is the number the user guessed

    bool numberismagic = false; // This is the flag variable

    unsigned int seed;

    seed = time(NULL);

    srand(seed);

    magic = rand() % 20 + 1;

    cout << "How many magic numbers would you like to guess at today?\n";

    cin >> magicguesses;

    for (i = 1; i < magicguesses + 1; i++)
    {
        cout << "This is trial number:" << i << endl;

        for (guess = 1; (guess < 4) && (!numberismagic); guess++)
        {
            cout << "This is guess number:" << guess << endl;

            cout << "Guess a number between 1 and 20:" << endl;

            cin >> number;

            while ((number < 1) || (number > 20))
            {
                cout << "Your guess is invalid; guess a number between 1 and 20 \n";

                cin >> number;

                cout << endl;
            }

            if (number == magic)
            {
                cout << "You have guessed the magic number correctly! \n";

                numberismagic = true;
            }
            else
            {
                cout << "Sorry - you guessed incorrectly! \n";

                if (number > magic)
                    cout << "Your guess is too high \n" << endl;
                else
                    cout << "Your guess is too low \n" << endl;
            }
        }

        if (number != magic)
            cout << "The magic number is:" << magic << endl;
    }

    return 0;
}

Answer 1

我不确定您的第一个问题是什么，但是对于这个问题“我也对更改什么感到困惑，以便一旦用户正确猜出魔数(Magic Number)就可以更改魔数(Magic Number)”，您应该编辑变量 magic在第一个 for loop 中，因此魔数(Magic Number)会在用户猜对或尝试次数用完后发生变化。

for (i=1;i<magicguesses+1;i++)
{
    //magic equals new random number
    //the rest of your code
}