C ++我是否错误地使用了void函数？

Question

Errors:

• C2182: 'tellStats' : illegal use of type 'void'
• C2440: 'initializing' : cannot convert from 'std::string' to 'int'
• incomplete type is not allowed.

All of these errors are found on this line:

    //ClassPractice.cpp
    void tellStats(pick);

which calls...

    //Functions.h
    void tellStats(string);

which is defined as...

    //Functions.cpp
        void tellStats(string choice)
    {
        if (choice == "wizard")
            {
            cout << "These are the Wizard's stats:" << endl;
            cout << "Max HP: 80\nSpeed: 7\nAttack: 10" << endl;
            }
    }

I don't understand why I am getting these errors. I don't know why an int is even involved with the error. I see nothing referring to ints in these sections of code. I thought I was using 'void' correctly because I don't want to return a value with the function.

Answer 1

You dont call a function with the return type. Dont say:

void tellStats(pick);

just use tellStats(pick); .

Is that line the only place you call tellStats?

Answer 2

The int is a red herring. For historical reasons, compilers internally often substitute int when they're missing a type. This normally shouldn't happen, but here you see this exposed because the compiler tried to continue after the first error. The compiler incorrectly guessed that you wanted to define a variable tellStats of type void int and initialize that variable with a string.