找出在我的程序中放置 [I] 的位置

Question

下面我在程序中设置一个y/n 问题，我知道我需要一个名为i 的标识符，以便cin 行在if 中工作。但是，我不确定将我的标识符放在哪里。

#include <iostream>
#include <string>

using std::string, std::cin, std::cout, std::endl;

int main() {
    const int MaxNum = 3;
    int simcard;
    string familyone[MaxNum] = {
        "Name One",
        "Name Two",
        "Name Three"
    };
    int famnumone[MaxNum];
    int choice;
    string familytwo[MaxNum] = {
        "Name One",
        "Name Two",
        "Name Three"
    };
    int famnumtwo[MaxNum];
    string familythree[MaxNum] = {
        "Name One",
        "Name Two",
        "Name Three"
    };
    int famnumthree[MaxNum];
    string phonetype[MaxNum] = {
        "Iphone",
        "Android",
        "Random Phone"
    };
    string familysim[MaxNum] = {
        "Family one Sim",
        "Family two Sim",
        "Family Three Sim"
    };
    string simtype[MaxNum] = {
        "Iphone SIM",
        "Android SIM",
        "Random Phone SIM"
    };

    //Here we have information for each family members name to later identify who each phone belongs too

    cout << "SIM card matching tool\n";
    cout << "Enter Family One Names ==>";
    for (int i = 0; i < MaxNum; i++) {
        getline(cin, familyone[i]);
    }
    do {
        cout << "would you like to continue to the sim/y, or would you like to add another family/n" << endl;
        cin >> choice;
        choice = tolower(choice);
    } while (choice != 'n' && choice != 'y');

    if (choice == 'n') {
        cin >> familytwo[i];
        if (choice == 'y')
            cin >> simtype[i];
    }

    //add y/n below or possibly add a more complex anwser "if you would like  to continue with the SIM type SIM or if you would like to add another family type family
    cout << "Would you like to continue to the SIM/y, or would you like to add another family/n";
}

Answer 1

我认为你搞砸了你的 do-while 循环：

i=0;
do {
        cout << "would you like to continue to the sim/y, or would you like to add another family/n" << endl;
        cin >> choice;
        choice = tolower(choice);

         if (choice == 'n')
            cin >> familytwo[i];
         if (choice == 'y')
            cin >> simtype[i];
        i++;
    } while (choice != 'n' && choice != 'y')

编辑：您可以在每一轮中增加 i。