C++

Question

Can somebody explain how static variables are presented in memory. When they are mostly used, and are they alive in memory through the whole main functions or only in block ?

Answer 1

Static variables are alive for the entire time your program exists. The usage depends on the program. Things like: a list of all instances of the class so you can search them, unique id number to assign to the next instance, the root pointer for a link list or tree made up of the instances, etcetera.

Answer 2

thanks