Upgrade Ubuntu Version

SET NOTIFICATION FOR NEW VERSTION:  Goto software center  > edit  > software sources > ubuntu software (select “server for india”)  &&  updates ( notify me of a new ubuntu version : for any new version).   Goto Update manager > Upgrade . Advertisements

Pointers in c++

A pointer is a variable that that contains the address of another variable in memory.   Declaration of pointer: A pointer variable (ptr)  is declared with asteriks( * ) data_type  *pointer_variable; example:  int *ptr;

Who is user Nobody?

“Nobody” is the conventional name of a user account which owns no files, is in no privileged groups, and has no abilities except those which every other user has. Pretty much the user nobody has zero permission… If you stare at the list of running processes on your server for long enough, you are bound to … More Who is user Nobody?

Macros in c++

A macro is a fragment of code which has been given a name. Whenever the name is used, it is replaced by the contents of the macro. There are two kinds of macros. They differ mostly in what they look like when they are used. Object-like macros resemble data objects when used, function-like macros resemble function calls.

Header Files in C++

Before preceding to header files, you must aware of these terminologies: Preprocessor directives : Preprocessor directives are lines included in the code of our programs that are not program statements but directives for the preprocessor. Processors are automatically invoked by compiler. Processing happens before compiling. These lines are always preceded by a hash sign (#). … More Header Files in C++