For a working definition,we've said that a process is a running program.This means that the operating system h-as loaded the executable file for the program into memory,has arranged for it to have access to its command-lin-e arguments and environment variables,and has started it running.A process has five conceptually different are-as of memory allocated to it:
Code:
Often referred to sa the text segment,this is the area in which the executable instructions reside.
Initialized data:
Statically allocated and global data that are initialized with nonzero values live in the data segment.
Zero-initialized data:
Global and statically allocated data that are initialized to zero by default are kept in what is colloquially called the SS area of the process.
Heap:
The heap is where dynamic memory(obtained by malloc() and friends)comes from.
Stack:
The stack segment is where local variables are allocated.
