Learn C++ - "Hello World "

The C++ programming language was developed at AT&T Bell laboratories in the Early 1980s by Bjarne Stroustrup. He fond "C" lacking simulation and decided to extend the Language by adding features from Simula 67.

Since then C++ is most preferred High Level Language. Here we will First of all make a Program that will Generate the Output "Hello World" on User Screen

We will be using Turbo C++ IDE, Here we'll assume that you have installed Turbo C++ 3.5 or version 4.0

Setting the Environment:

Go to Installed location , open "TC>Bin> TC.exe"
TC will open up , click on Windows > Close All
Go to File > New , do not save it.
Now go to "DOS SHELL" , and make a folder to Save the File.
Type "MD CPP" , then "CD CPP" , then "EXIT". Here a folder namely "CPP" will be created in your Bin Directory . You can Name it anything instead of CPP. From now onwards we will save all Program in this Directory

First Step : Adding Header Files

Header Files includes predefined function that a compiler will call while compiling the Program. The Basic Header file is iostream.h . It is the standard library which provide instruction to Implement input /output facilities.

Every Header file is included like this:

#include<iostream.h>

Second Step: Initialize main() Function

Every C++ function have " ()" bracket in the End and posses its code in { } bracket

Third Step: Write the Code

#include<iostream.h>
#include<conio.h>
void main()
{

clrscr();

cout<<"Hello World";

getch();

}

Explanation

Header File conio.h is used to implement function clrscr() , which will clear all the previous cache of TC Compiler
cout and cin are basic I/O operators , we use cout with "<<" to output Data and use cin with ">>" to give Data to a Program
getch() function is used to get character from user . Here we used it , so that Program will not got closed till we input something.
Every Preprocessor like Header files are used in Program by using Preprocessor directive #include
Every Code line Ends with semicolon " ; ".