Difference between static and non static data members in c++

Asked by admin @ 03/08/2021 in Computer Science viewed by 308 People

Answered by admin @ 03/08/2021

Static namespace scope variables have internal linkage, while non-static namespace scope variables have external linkage by default! Details: a const namespace scope variable has internal linkage by default. That linkage can by changed by keyword extern.
static variables in a class is associated with the class, that means, all instances of the class have the same instances of the static variables; they’re like a global variables that every instance of the same class has access to.
non-static variables in a class are instance members, that is, every instance of the class will have its own instances of the non-static variables.
a static data member of a class has external linkage if the name of the class has external linkage. [$3.5/5]
a static variable inside a function retains its value even after returning from the function. That is, its lifetime is equal to the lifetime of the program itself.

Difference between static and non static data members in c++

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