First C++ Program

Welcome Program

// hello.cpp: displaying Hello World message

#include<iostream.h>        //preprocessor directive statement void main ()          // function declarator

{           //function block open brace

cout<< "Welcome in the world of C++"; 

}           //function block close brace

the output will be

Welcome in the world of C++ 

Program Description

C++ programs must hold a function known as main (), from that execution of program begins.  The  function  main()  is  designated  as  the  beginning  point  of  the program execution and the user defines it. It cannot be overloaded and its syntax categories are implementation dependent. Thus, the number of arguments and their data-type is dependent on the compiler. Let's have a close at an extremely simple C++ program that shows Hello World on the screen: -

A header file iostream.h supports streams programming features through involving pre- defined stream objects. The C++'s stream insertion operator, << sends the message "Welcome to C++" to the pre-defined console object, count, that in turn prints on the console.