Memory map of C++ programme

When an object file is run on computer it uses four different areas of memory. Memory areas and their main uses are as follow:

• First area of memory holds code of programme.

• Second area is used to store global variables.

• Third area used for stack. Stack holds the return address of
  function calls, arguments to functions and local variables. It is also
  used to save status of CPU.

• Fourth area is used for heap. Heap
  is a free memory used for linked list and trees. Heap is used for
  dynamic allocation functions.