Friend functions and classes in C++ (Programming for beginners)

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In programming, like in real life, exists the concept of friendship. In the same way that your friends in real life can access private areas of your life (that are inaccessible to other people), in programming, a friend function or a friend class can access private and protected members of a specific class.
In this video, you'll learn how to work with friend functions and classes, friend functions and classes common uses, as well as the most important tips related to friend functions and friend classes.
And at the end, you can find a homework task in order to practice programming on your own.
The solution for that task will be pinned in the comment.
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Contents:
00:00 - What are friend functions
00:52 - Best extension for Visual Studio C++
02:10 - Let's create a problem
07:19 - Solving the problem with friend functions
10:37 - Multiple friend functions
11:28 - Friend classes
14:48 - Important tips about friend functions and classes
16:22 - Homework (operator overloading and friend functions)
Videos mentioned in this tutorial that you should watch:
Must know Visual Assist features - https://youtu.be/so1o7AoP49A
Encapsulation - https://youtu.be/a8ZB-TPB6EU
Inheritance - https://youtu.be/-W-TYjL0aFE
Operator overloading - https://youtu.be/BnMnozsSPmw
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