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

using namespace std;

void prn_instruction();
void play();
int get_call_from_user();

int main()
{
    prn_instruction();
    play();

    return 0;
}

void prn_instruction()
{
    cout << "这是一个猜硬币正反面的游戏";
    cout << "具体规则如下：";

}

void play()
{
    int coin;
    char flag = ‘Y‘;

    srand(time(NULL));          //设置随机数种子
    while (flag == ‘Y‘ || flag == ‘y‘)         //程序继续进行下去
    {
        coin = rand() * 2 / (RAND_MAX + 1);     //生成0  or 1
        if (get_call_from_user() == coin)
            cout << "你赢了";
        else cout << "你输了";
        cout << "\n继续玩吗？？（Yory）";
        cin >> flag;
    }
}

int get_call_from_user()
{
    double guess;
    do {
        cout << "\n输入你的选择（0表示正面，1表示反面）：";
        cin >> guess;
    } while (guess != 0 && guess != 1);

    return guess;
}