【问题标题】:initializing structs using user-input information使用用户输入信息初始化结构
【发布时间】:2010-04-26 00:32:04
【问题描述】:

我正在尝试制作一个适用于扑克(德州扑克)起手牌的程序;每手牌都有一个从 1 到 169 的值,我希望能够输入每张牌以及它们是否适合,并让这些值对应于一系列结构。这是到目前为止的代码,我似乎无法让它工作(我是一个初级程序员)。哦,顺便说一下,我正在使用 Visual Studio 2005

#include "stdafx.h"
#include <iostream>


int main()
{
    using namespace std;


    struct FirstCard
    {
        struct SecondCard
        {

            int s;  //suited
            int n;  //non-suited

        };

        SecondCard s14;
        SecondCard s13;
        SecondCard s12;
        SecondCard s11;
        SecondCard s10;
        SecondCard s9;
        SecondCard s8;
        SecondCard s7;
        SecondCard s6;
        SecondCard s5;
        SecondCard s4;
        SecondCard s3;
        SecondCard s2;


    };

    FirstCard s14; //ace
    FirstCard s13; //king
    FirstCard s12; //queen
    FirstCard s11; //jack
    FirstCard s10;
    FirstCard s9;
    FirstCard s8;
    FirstCard s7;
    FirstCard s6;
    FirstCard s5;
    FirstCard s4;
    FirstCard s3;
    FirstCard s2;


    s14.s14.n = 169; // these are the values that each combination
    s13.s13.n = 168; // will evaluate to, would eventually have 
    s12.s12.n = 167; // hand combinations all the way down to 1
    s11.s11.n = 166;
    s14.s13.s = 165;
    s14.s13.s = 164;
    s10.s10.n = 163; //10, 10, nonsuited
    s14.s13.n = 162;
    s14.s11.s = 161;
    s13.s12.s = 160;// king, queen, suited
    s9.s9.n = 159;
    s14.s10.s = 158;
    s14.s12.n = 157;
    s13.s11.s = 156;
    s8.s8.n = 155;
    s12.s11.s = 154;
    s13.s10.s = 153;
    s14.s9.s = 152;
    s14.s11.n = 151;

    cout << "enter first card: " << endl;

    cin >> somthing?//no idea what to put here, but this would somehow
            //read out the user input (a number from 2 to 14)
            //and assign it to the corresponding struct

    cout << firstcard.secondcard.suited_or_not << endl; //this would change depending
                                                            //on what the user inputs
    system("Pause");

} 

【问题讨论】:

  • 诚实吗?我认为你需要从头开始。从简单开始 - 编写一个让用户输入数字 2-14 和西装 (s,c,d,h) 的函数。然后调用它两次。分配给“card1”和“card2”,然后用它们来判断它是否适合并计算1-169索引。你的 Card 结构应该有“value”和“suit”。

标签: c++ visual-studio-2005 struct initializing


【解决方案1】:

首先,与其通过反复试验来学习,不如考虑阅读一本好的入门书籍 (list here)。每本值得一读的书都介绍了 C++ 中的基本输入以及如何处理重复代码,例如使用容器。

话虽这么说:我对扑克一无所知,但你肯定需要阅读容器 - 如果你重复定义变量,必须有某种方法来抽象它。

从你所拥有的出发,假设我们将值分组到一个结构中:

struct Values {
    unsigned suited;
    unsigned unsuited;
    Values() : suited(0), unsuited(0) {} // some default
};

然后我们可以使用允许我们通过编号访问它们的容器:

typedef std::map<unsigned, Values> SecondCardMap;
typedef std::map<unsigned, SecondCardMap> CardMap;

这样我们就可以通过它们的编号方便​​地插入和修改结构:

CardMap cards;
cards[14][14].unsuited = 169;
cards[13][13].unsuited = 168;

现在您只需从用户那里读取索引:

unsigned first, second;
std::cout << "enter first: ";
std::cin >> first;
std::cout << "enter second: ";
std::cin >> second;

并且可以根据那个访问值:

cards[first][second].unsuited = 1234;

请注意,上述内容并未解决任何错误处理等问题。

【讨论】:

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