This article will show you how to compile a C/C++ program on Linux using the GNU gcc/g++ compiler.
Hopefully this article will serve as a guide and tutorial to compiling GNU C/C++ programs on Linux.
Step 1: Install Build-essesntial Package
Open up a terminal on Ubuntu Linux and install the build-essential package by typing the following command in the terminal
sudo apt-get install build-essential
These are the important library files for compiling C/C++ programs on linux.
Step 2: Create a Seperate Folder to Hold Your Programs
Use the below command to make a directory on your desktop.
sudo mkdir -p CPP/HW/
By using the above command we are making a folder named 'CPP' & a sub-folder named 'HW' inside it.
Step 3: Change Your Working Path to Your Created Directory
Change your working directory in the Terminal to the folder which you just created by using the below command.
Step 4: Creating the Program File With 'nano'
We will use 'nano' an inbuilt simple text editor to create & write programs & their files. Use the command below to make your program file.
sudo nano helloworld.c
Step 5: Write Your Program Code and Save It
type your program code into the nano editor. For the sake of this tutorial I'll be making a simple helloworld program.
printf("\nHello World,\nWelcome to my first C program in Linux");
Now save your program by pressing Ctrl+X on your keyboard at the same time and ' press Y ' and press Enter
Step 6: Compiling Your Program
Type the below command to compile your program
gcc -Wall -W -Werror helloworld.c -o helloworld
The first line will invoke the GNU C compiler to compile the file helloworld.c and output (-o) it to an executable called helloworld
The options -Wall -W and -Werror instruct the compiler to check for warnings.
If you want to compile a C++ program then use the below command
g++ -Wall -W -Werror helloworld.cpp -o helloworld
Step 7: Executing Your Program
Type the below command to execute your program.
we typed ./helloworld since our compile version in the previous step is helloworld. If its xyz then we will type ./xyz
After typing this your program output will be shown in the Terminal.
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