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iOS Objective-C Basics (Retired) Functional Programming in C Scope

Posted by Paul Chen
Paul Chen
178 Points

So far I had only understood the first few lessons but when comes to functions and scope, I am so lost.

I don't even know the process and its getting complicated which my mind won't take it in. Is there a way to learn the lessons much easier?

1 Answer

Guillaume Maka
PLUS
Guillaume Maka
Courses Plus Student 10,224 Points
Guillaume Maka
Guillaume Maka
Courses Plus Student 10,224 Points

Think a scope like a closed area, all objects in this area can interact with each other but objects outside the area can't, because they can't see them -> Local scope

int a;

int main(){
  int b;
}

"a" can't use "b", because "b" is local variable to the "main" function: local scope
"b" can use "a" because "a" is a global variable to the entire file: global scope.

I think an image would be more appropriate for a better explanation, I'll try to find one and link it to this answer.

scope