Lesson # 1 Your First Program in C++

LESSON # 1

I ignore the boring detail and explanation just wait and I will show you how to write your first program in C++.

WHAT YOU NEED TO GET STARTED?

1. Text (Code) Editor           2. C++ Complier

But we can get these two in a single software i.e. IDE (Integrated Development Environment). Remember that we will use Dev-C++ (freeware) in our lessons, go ahead and download it from www.bloodshed.net. Now install Dev-C++ in your computer and get ready to type your first program.

CLICK HERE TO DOWNLOAD DEV – C++

YOUR FIRST “HELLO WORLD” PROGRAM

After installation open Dev-C++ and:

1.  For creating a new source file, Click -> File - > New -> Source File               (Ctrl +N)

2.  Type the following code in Dev- C++ editor.

using namespace std;

#include<iostream>

main()

{

cout<<"Hello World";

system("pause");

}

3.  For saving source file, Click->File->Save

4.  To see the output, Click ->Execute -> Compile & Run      (Press F9)

5.  Press any to exit.

C++ Code	Explanation
using namespace std;	A feature from namespace that eliminates extra code std::cout
#include<iostream>	This line include a header file “ isostream” from include folder which is available in Dev-C++ installation directory.
main() {	This line determines the starting of the main program, each program must have a main function
cout<<"Hello World";	Displays  Hello World on the screen
system("pause");	Pauses the program to see the output
}	Indicates the end of main program
Output
Hello World Press any key to continue . . .
CLICK HERE TO DOWNLOAD SOURCE CODE

Get involved, try this simple code yourself. If you have any problem, write in the comments. I will try my best to answer.  

CODE IN ACTION