Overview

In this tutorial, we will learn the steps involved to run C++ program on a Linux machine. This is a step-by-step guide with screenshots and code.

Environment

• Linux machine
• C++ compiler
• vi Text Editor

Install GNU C++

In this step, we need to install the GNU C++ compiler.

https://www.testingdocs.com/install-gcc-c-compiler-on-opensuse/

Create C++ Source File

Open Terminal/ Konsole.

Change the working directory path to a suitable directory.

Create a file with .cpp file extension. For example, we will create a hello.cpp file.

$ touch hello.cpp

Edit the C++ source file

Type the following command

$ vi hello.cpp

Enter insert mode. Enter the “i” keyboard key.

Write C++ Program

Enter the C++ code. For simplicity, we will write a simple C++ program to print Hello, World! message to the computer screen.

Save the C++ file

Once done with the C++ code. Enter the esc key. Type wq and hit the Enter key to save the file and exit the vi text editor.

Compile C++ Program

To compile the C++ program type the following command:

$ g++ hello.cpp

This will create the a.out object file in the working directory.

Run C++ Program

To run the C++ program type the following command:

$ ./a.out

We should be able to see the message “Hello, World!” displayed on the computer screen.

a.out is the default executable output file. We can override this with the -o flag during the compilation process. To name the executable file:

$ g++ hello.cpp -o hello

$ ./hello

That’s it. We have successfully created and run a sample C++ program on the Linux machine.

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C++ Tutorials

C++ Tutorials on this website:

https://www.testingdocs.com/c-coding-tutorials/

For more information on the current ISO C++ standard

https://isocpp.org/std/the-standard