1. C++ Hello World Example
2. C++ Hello World Tutorial
3. Writing Hello World In Dev C Youtube
4. Writing Hello World In Dev C++

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To run the hello world program, you'll have to follow the following steps −

Write a C++ program

Now that you have a compiler installed, its time to write a C++ program. Let's start with the epitome of programming example's, it, the Hello world program. We'll print hello world to the screen using C++ in this example. Create a new file called hello.cpp and write the following code to it −

Let's dissect this program.

Line 1 − We start with the #include<iostream> line which essentially tells the compiler to copy the code from the iostream file(used for managing input and output streams) and paste it in our source file. Header iostream, that allows to perform standard input and output operations, such as writing the output of this program (Hello World) to the screen. Lines beginning with a hash sign (#) are directives read and interpreted by what is known as the preprocessor.

Line 2 − A blank line: Blank lines have no effect on a program.

Line 3 − We then declare a function called main with the return type of int. main() is the entry point of our program. Whenever we run a C++ program, we start with the main function and begin execution from the first line within this function and keep executing each line till we reach the end. We start a block using the curly brace({) here. This marks the beginning of main's function definition, and the closing brace (}) at line 5, marks its end. All statements between these braces are the function's body that defines what happens when main is called.

Line 4 −

This line is a C++ statement. This statement has three parts: First, std::cout, which identifies the standard console output device. Second the insertion operator << which indicates that what follows is inserted into std::cout. Last, we have a sentence within quotes that we'd like printed on the screen. This will become more clear to you as we proceed in learning C++.

In short, we provide cout object with a string 'Hello worldn' to be printed to the standard output device.

C++ Hello World Example

Note that the statement ends with a semicolon (;). This character marks the end of the statement

Compile the Program

Now that we've written the program, we need to translate it to a language that the processor understands, ie, in binary machine code. We do this using a compiler we installed in the first step. You need to open your terminal/cmd and navigate to the location of the hello.cpp file using the cd command. Assuming you installed the GCC, you can use the following command to compile the program −

This command means that you want the g++ compiler to create an output file, hello using the source file hello.cpp.

Run the program

Now that we've written our program and compiled it, time to run it! You can run the program using −

You will get the output −

Most common quiestion is:

Is there any C++ GUI API?

My answer is MANY.

There are many API's for making GUI applications.
Here are some.

1. WinAPI: (C based)(MFC is C++ based)
Its a great API and the best solution if you are windows programmer. First code will look a bit difficult, but later (after making few apps.) you will see its not so rusty. I like it, because you can do almost everything with it (in windows). The only bad thing is, that you cannot make applications for Linux with it.
Tutorial:
'>http://www.winprog.org/tutorial/index.html
2. Qt4 / Qt3 (C++ based)
This is a nice API, for making GUI applications. It works under Linux, Windows and Mac OS X. Its really easy to learn and use. But, until you dont buy licenced version, you will need to add tons of -dll s, to run your application. Qt compiler doesnt work in Vista. And, Qt4 API has a bit complicated way, to get buttons to work, if button holds some more complicated operations(actually you have to make your own SLOT's).
Tutorial:
http://sector.ynet.sk/qt4-tutorial/
http://doc.trolltech.com/4.2/examples.html
3.GTK+ (C based)
Sorry, but I never tryed it, so Google might help you.
Tutorial:
http://www.gtk.org/tutorial/

Some examples:

WinAPI
Simple message box:

C++ Hello World Tutorial

Simple window:

QT4
Simple Message Box:

Note: Use MsgBox for making message boxes

Simple Window:

GTK+

Simple window:

I hope this post will help anyone!

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• commentLatest Postby sreenivasulaLatest Post

jan10241887

I also think newbies dont know for C++ IDE's. (Developing Enviroviment).

I will make a short description of some

1. Visual Studio 2005 (Visual C++)
/auto-tune-up-upland-ca.html. This is a beautiful IDE for making console and win32 GUI applications. You can also compile DirectX10 or 9 projects as well. I didn't test it for compiling Qt or GTK+ applications yet.
Affcourse as a Microsoft product isn't free, but it seems to be really safe and stable IDE for Windows Applications.
I really like it, and I recommend it to everyone.

More info '>HERE

2. Code::Blocks
Great for compiling WinAPI, Qt, GTK+, WXWidgets, Ogre, D, C++ console, C console and other projects. I found some bugs, and sometimes there are problems to compile.
It's one of the best FREE IDE's.

Information and download '>HERE

Writing Hello World In Dev C Youtube

3. Dev-C++
This IDE, written in Delphi is the right place for beginners. It isn't perfect and it allows you 'holes' and 'bugs' in your program.Thats why its good for beginners. VS2005 wouldnt compile most of the code, which Dev-C++ does.

Information and Download '>HERE

SOME LINUX IDE's:
-Code::Blocks
-Anjuta IDE
-QDevelop

Ah, and dont take care about all off my opinions. I prefer VS2005, but If you dont have a money, than choose Code::Blocks or Dev-C++.

I hope moderators will make this topic sticky (read me)

I hope this helps

Writing Hello World In Dev C++

BTW: Sorry for my grammatic mistakes.