c++ - 如何在一个函数中拥有所有选项？

Question

所以我正在制作一个文字冒险游戏，我希望能够拥有一个包含所有输入的功能。因此，我不必每次都创建一个 if 语句来检查每个方向，我可以只放置一个包含所有这些的函数。我该怎么做？

    string input;
    while (input != "n", "s", "e", "w")
    { 
        getline(cin, input);
        if (input == "n")
        {
            dTable();
        }
        if (input == "e")
        {
            cout << "You sit on the sofa. Congratulations" << endl;
        }
        if (input == "w")
        {
            cout << "You just ran into a wall" << endl;
        }
        if (input == "s")
        {
            outsideHouse();
        }
        if (input == "stats")
        {
            stats();
        }
        if (input == "help")
        {
            help();
        }
        else
        {
            cout << "Sorry I am not Siri I don't understand" << endl;
            getline(cin, input);
        }
        break;
    }

    return 0;
}

Answer 1

您可以在这里看到使用函数的不同方法，这就是我将如何解决这个问题。您可以专注于在 main() 部分添加新问题而不必编写所有的 if 请求一遍又一遍。

    #include <iostream>
    #include <string>

    using namespace std;

    void help();
    void stats();

    string check(string input,string n,string s, string w, string e)
    {
    string result;
    if (input == "n"){
        result = n;}

    else if (input == "s"){
        result = s;}

    else if (input == "w"){
        result = w;}

    else if (input == "e"){
        result = e;}

    else if (input == "help"){
        cout << "help" << endl;} //help()

    else if (input == "stats"){
        cout << "stats" << endl;} // stats()

    else if (input == "exit"){
        result = "exit";}

    else
        cout << "Sorry I am not Siri I don't understand. Try again" << endl;


    return result;
    }

    string call()
    {
        string input;
        cout << "Where do you want to go? n s w e" << endl;
        getline(cin, input);
        return input;
    }

    int main()
    {
        bool slope = false;
        string input, result;

        input = call();
        result = check(input,"outside","dTable", "You just ran into a wall", "You sit on the sofa. Congratulations");

        while (slope != true)
        {

            if(result == "house")//room1
          {
            cout << "You are in the house" << endl;
            input = call();
            result = check(input,"outside","dTable", "You just ran into a wall", "You sit on the sofa. Congratulations");
          }
            else if(result == "outside")//room2
          {
            cout << "You are outside"<< endl;
            input = call();
            result = check(input,"You just ran into a wall", "house","dTable", "You sit on the sofa. Congratulations");
          }
            else if(result == "dTable")//room3
          {
            cout << "You are dTable" << endl;
            input = call();
            result = check(input,"You just ran into a wall", "You sit on the sofa. Congratulations","outside","house");
          } ///adding one room after another and connect it with each other
            else if(result == "exit")
          {
              slope = true;
          }
            else
          {
                cout << result << endl;
                input = call();
                //some winning or loosing message here
          }
        }
        return 0;
    }