C++ if/else if语句无法正常工作

我正在尝试编写一个类似游戏的冒险程序,我需要if else语句才能正常工作.但是,每当我运行if if语句时,它都不会输出我想要的内容.

#include 

using namespace std;

int main()
{
    while(true)
    {
        cout << endl << "What will you do?: ";
        string input;
        cin >> input;
        if (input == "Nothing" || input == "nothing")
            {
                cout << "Why would you do nothing?" << endl;
            }
            else if (input == "Look North" || input == "Look north" || input == "look North" || input == "look north")
            {
                cout << "You look north. There is nothing north." << endl;
            }
    }
}

我期望它输出的是:

What will you do?: nothing
Why would you do nothing?

What will you do?: look north
You look north. There is nothing north.

What will you do?:

但是当我把它们作为输入时,我没有得到它,我得到了这个:

What will you do?: nothing
Why would you do nothing?

What will you do?: look north

What will you do?:
What will you do?:

我想在解决这个问题上提供一些帮助,因为我无法找到为什么会发生这种情况的答案.

cin >> input;

不读空格.你需要使用std::getline.

getline(cin, input);