Got confused with C++ OOP

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Buckys C++ Programming Tutorials - 42 - Arrow Member Selection Operator - YouTube[^]

So you see here he has 3 files: main.cpp, Sally.h and Sally.cpp and he is defining a void function in the Sally.cpp file with syntax void Sally::printCrap(). I got confused in that why he is putting the name of the class for defining a function in outside the class ? Can someone explain me that. I will be really thanksful!

What I have tried:

Sorry for the small and not detailed question but I am limited to 200 characters :X I hope you understood my question and hope you will explain me that.

Thanks!

Posted 20-May-17 7:37am

The_Unknown_Member

Updated 20-May-17 9:56am

CHill60

v2

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[no name] 20-May-17 14:05pm

Why aren't you asking "Bucky"?

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nitrous_007 · Accepted Answer · 2017-05-20T09:56:00

Solution 1

The Sally::printCrap() is because printCrap is defined outside the Class Sally. If it were defined inside the class (inline) it would not have to have Sally::

If you dont have 'Sally::', then the compiler would not know which class the function belonged to.

Posted 20-May-17 9:56am

nitrous_007

Updated 20-May-17 16:50pm

v2

Comments

The_Unknown_Member 21-May-17 3:18am

You mean because it's function prototype is in the Sally class ?

nitrous_007 21-May-17 12:45pm

Correct

The_Unknown_Member 21-May-17 15:17pm

Okay very thanks you!