c ++矢量多个值

Question

我是c ++的新手,但是有半年的Java se/ee7工作经验.

我想知道如何将3个值放入vector<string> 示例中:vector<string, string, string>或者只是vector<string, string> 为了避免使用3个向量.

vector<string> questions;
vector<string> answers;
vector<string> right_answer;

questions.push_back("Who is the manufacturer of Mustang?");
answers.push_back("1. Porche\n2. Ford \n3. Toyota");
right_answer.push_back("2");

questions.push_back("Who is the manufacturer of Corvette?");
answers.push_back("1. Porche\n2. Ford \n3. Toyota \n4. Chevrolette");
right_answer.push_back("4");


for (int i = 0; i < questions.size(); i++) {
    println(questions[i]);
    println(answers[i]);

    if (readInput() == right_answer[i]) {
        println("Good Answer.");
    } else {
        println("You lost. Do you want to retry? y/n");
        if(readInput() == "n"){
            break;
        }else{
            i--;
        }
    }
}

我想使用像questions[i][0] questions[i][1] questions[i][3]是否可能的东西.

Answer 1

您可以在以下位置拥有struct并存储它的对象vector:

struct question
{
    std::string title;
    std::string choices;
    std::string answer;
};

// ...

question q = {"This is a question", "Choice a\nChoice b", "Choice a"};
std::vector<question> questions;
questions.push_back(q);

然后你会使用questions[0].title或questions[0].answer等