Function Pointers in C - How to Read and Write Function Pointer Types and use Dynamic Dispatch

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Kris Jordan

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Ladies and gentlemen, this is how you teach. Kris is oozing with competence and pedagogical thoughts.

I now feel comfortable with C and know about 19 different YouTubers teaching C, but Kris takes teaching to a higher level.

It's really nice that there's no fancy video editing or irrelevant noise or music - just bare teaching!

grimvian

Thank you very much from a german IT student that now understands function pointers way better :-)

marcoliebl

Damn! Thank you for this Kris. It is very helpful.

vishvanathkarthi

Thank you. I'm supposed to be doing my OS assignment but the video was really interesting xd

UmmadikTas

it`s the same as with pointers to arrays you have to use parenthesis around the *name because * has lower precedence than ( ) ... how else would the compiler even know that you ain`t actually declaring a ptr return type, ps when you want to use a function as a parameter in a function implemention you dont even need the pointer just write the function in the declaration and when you call that function it`s generalized by default you can simply call it with any function as the type you used in declaration e.g void euler_method( double generic_F(int, int), dbl a, dbl b ) you can have as many as you want in the param list thne you simply use your euler_method( sqrt, 5.5, 3.3) the main ideea behind all pointer types is based on 3 reasons 1. type checking, interpretation and arithmetics without encapsulating the type of the object inside the Pointer Metadata this can`t be done as the compiler has absolutely no means of understanding the memory layout to do the arithmetics, it has no way to interpret the bits is it a double or a long int ? and it can`t understand the intent because dividing a char string by 3 has no purpose or meaning it`s absurd

lattehour

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