How to declare a class function in header file in cpp file?

Question

For example in the following code:

class mixedFraction {
    public:
        mixedFraction();    //constructor
        void add(mixedFraction f);     //The functoin I want to define in cpp file
}

I know that to declare constructor in cpp is

<class name> :: <constructor name>(<type> <name>, ...);

But I try the samething with function it is wrong

mixedFraction::void add(mixedFraction f);

How can I do to make it correct?

`void mixedFraction::add(mixedFraction f);` – YSC Nov 27 '15 at 14:55 — YSC, Nov 27 '15 at 14:55
Ok, got it , thanks for the help. – Leon Ma Nov 27 '15 at 15:01 — Leon Ma, Nov 27 '15 at 15:01

score 1 · Accepted Answer · edited May 23 '17 at 12:23

1

You need to put the return type before the class name:

void mixedFraction::add (mixedFraction f) {
     //...
}

This kind of thing should be covered in your introductory book. If you don't have one I'd recommend buying/renting/stealing one of these.

edited May 23 '17 at 12:23

Community

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1

answered Nov 27 '15 at 14:55

TartanLlama

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Ok, thanks. I know this is fundamental, but our teacher hasn't taught us class yet, and there is homework about class. And we don't have a textbook, so... Anyway, thanks. – Leon Ma Nov 27 '15 at 15:01

How to declare a class function in header file in cpp file?

1 Answers1