This short tutorial introduces you how to install a C compiler plus a text editor to do C programming on Ubuntu. The compiler is GNU gcc and the editor is Geany. Don't worry, this tutorial is intended for beginners and easy to follow. I will show you how to compile a .c source code file until executing it using Geany. Happy learning!

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1. Install Compiler


Do it:
$ sudo apt-get install -V gcc

2. Install Editor


Do it too:
$ sudo apt-get install geany

3. Write


Now run Geany and write this short lines of code. Save it as program.c.
#include <stdio.h>
int main()

printf("hello, C programming!\n"); // print to screen
return 0;
}


4. Compile


Now, compile your source code. Press Compile button, then press Build button. If your source code is free from errors, this compilation should produce a file named program without extension on the same folder as your .c file. See GIF animation below.


  • What's Compile button? Pressing this button is the same as gcc -c program.c that produces a file named program.o. This file is called object file.
  • What's Build button? Pressing this button is the same as gcc -o program program.c that produces the final file named program. This file is called binary executable file.
  • What's Run button? Pressing this button is the same as ./program that is executing the binary executable file.

5. Run


Now press Run button. This should open a Terminal and show the output of your code. The output should say  hello, c programming! . If this is your first experience with programming, welcome to C and keep learning!


C Source Code Examples


Where to get .c sources on the net? If you have a textbook about C, just type the source code available there. But if you don't have any, go to http://cprogramming.com. They have enough C source codes arranged in chapter by chapter that are suitable for beginners. Learn them one by one!


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