Pointers can be hard to learn and understand why or when to use them. This is a nice short video that clearly articulates all the basics in a very clear and easy to follow along example. Thanks for all the videos! Very well done.

i absolutely love this C tutorial series. your channel is amazing! i need to pick up the pace, i still got 154 videos left to grind..

@PortfolioCourses

6 ай бұрын

I’m really glad that you’re enjoying the content. :-)

This concept is hard to get for beginners, thanks a lot!

@PortfolioCourses

Жыл бұрын

You're very welcome Philipp! :-)

Watched so many videos on this. First time I actually understood what it is. Good video.

Passed by pointer. Got it!!! Great video, thanks!

@PortfolioCourses

2 жыл бұрын

You're welcome! :-D

This is gold!!! Thank you for the clear explanation

@PortfolioCourses

2 ай бұрын

You're very welcome! :-)

I get it now. Pass by reference (pointer) is needed because the variables in functions are exclusive. It's like there's a wall between the function area and the main area. The only way we can connect those variables (in main and in function) is to manipulate the memory via addresses. Kinda like digging a hole underground.😄

The Best channel so far

@PortfolioCourses

Жыл бұрын

Thank you very much Louis! :-)

really good, thanks you!:)

@PortfolioCourses

2 жыл бұрын

You're welcome! :-)

Got it ! thank you a lot !

@PortfolioCourses

Жыл бұрын

Excellent, and you're welcome! :-)

thx man I immediately understood everything after watching this video😁

Clear as a whistle

pass by pointer 💪thnx a lot, this channelis realy one of the best c channel ever :)

@PortfolioCourses

Жыл бұрын

Haha thanks I'm glad you think so Muhi! :-)

thank you do much such a great video.

@PortfolioCourses

Жыл бұрын

You're welcome Yoeum, I'm glad you enjoyed it! :-)

Really thanks ❤

@PortfolioCourses

10 ай бұрын

You’re welcome! ❤️

cool man! thx

@PortfolioCourses

2 жыл бұрын

You’re welcome! :-)

still didnt understand why call by value didn't work... 😆 but I understood the call by reference mechanism, thanks!!

@guusziin6241

Ай бұрын

because in C apart from global variables all variables only exist inside the scope of a function. in the example of the video x and y only exist inside the main function and when you pass their values to the swap function it will actually create a copy of them that only exist inside swap, and when the swap function ends the copy will be deallocated and will return to the main function where the actual x and y remained unchanged. so when you actually pass the addresses of x and y as an argument of swap it'll change their values for the whole program, because the actual value stored in the memory address of x and y will be changed other than a copy that only exists in the scope of swap

if we think that & is inverse of *, & times * will produce 1. Therefore *&x = x. (i dont know is that interpretation whether correct or not)

@stoic5497

3 ай бұрын

No

what IDE you're using sir? and thanks for the video.

@PortfolioCourses

Жыл бұрын

You're welcome! :-) In this video I am using Visual Studio Code as a text editor, and I am using the gcc compiler on the MacOS Terminal.

Can you have (int &a, int &b) as function perameters? Im confused here? As we want an address to deference...?

@PortfolioCourses

Жыл бұрын

We can do that in C++ where reference variables are supported. But in C we can only achieve 'pass by reference' by using pointer parameters. When we have a parameter like int *a, the argument is going to be a pointer (memory address). :-)

why is it called passed by pointer and not passed by reference?

@PortfolioCourses

Жыл бұрын

Great question Bruno! :-) The term pass by reference is more accurate in languages like C++ that have reference variables (and reference parameters): kzread.info/dash/bejne/layt1beJiqucZbw.html. Reference variables are a different type of variable than a pointer, though the concepts are a bit similar too... references are a reference to the variable, the essentially "are" the variable they are referencing and give us access to that variable. Whereas pointers store a memory address, the memory address of the variable they are "pointing to", and we can access the variable they are "pointing to" by de-referencing the pointer. So in C, because we are using pointers, it's more accurate to say "pass by pointer". As a practical matter though if you say "pass by reference" when referring to "pass by pointer" people will know what you mean and the terms get used in a more casual manner like that in practice.