Variables and Parameters 1

This is the first in a sequence of computer science videos about the scope and lifetime of variables and parameters. The nature and use of local, class level, static and global variables are described in relation to the execution stack and the heap. The difference between value types and reference types is also explained, as is passing parameters by reference or by value. Code examples are written in VB.NET. In particular, this first video describes the layout of the virtual address space of a typical process. It defines a number of terms including program, process, subroutine and method, and introduces the roles of the stack and the heap.