C++ 检查用户是否输入了有效答案

Question

I need to check if they input happy,sad or mad when prompted with: input a mood (happy,sad,mad) This is my code for it so far count = 0; while (count<1){

    cout << ", How are you feeling today? (happy,sad,mad)" << endl;

    cin >> mood;

    if (mood == sad){

        cout << "im sorry you're feeling sad" << endl;

            count++;
    }

    else if (mood == happy) {

        cout << "I'm glad you're feeling happy!" << endl;

            count++;
    }

    else if (mood == mad){
        cout << "Don't be angry, there's so many happy things in life!" << endl;
    }
    else{

        cout << " invalid input " << endl;

        count = 0;
    }

    }

but if i put in happy,sad or mad it just goes to the invalid input. i also tried declaring string variables for them like string happy=happy; string sad=sad; string mad=mad;

Answer 1

Two things:

1. Make sure you're initializing your String's correctly

   string happy = "happy";

2. Try using string.compare() rather than ==

    mood.compare(happy);

For more details: http://www.cplusplus.com/reference/string/string/compare/