Langage C #2 - compiler programme

Introduction

This tutorial will guide you through the process of compiling your first C program using the GCC compiler. It is essential for turning your source code into an executable program, which is a critical step in software development.

Step 1: Install MinGW

Before you can start compiling your C programs, you need to install MinGW, which includes the GCC compiler.

1. Visit the MinGW installation guide by following this link: Install MinGW.
2. Download the MinGW installer from the official site.
3. Run the installer and follow the prompts:
   • Select the components you want to install. Ensure that you include the GCC compiler.
   • Choose the installation directory (e.g., C:\MinGW).
4. Once installed, add MinGW to your system path:
   • Open the Control Panel and navigate to System and Security > System.
   • Click on "Advanced system settings."
   • In the System Properties window, click on the "Environment Variables" button.
   • Find the "Path" variable in the "System variables" section and click "Edit."
   • Add the path to the MinGW bin directory (e.g., C:\MinGW\bin).
5. Restart your command prompt to apply the changes.

Step 2: Write Your C Program

Now that you have installed MinGW, it’s time to write your first C program.

1. Open a text editor (e.g., Notepad, Sublime Text, or VS Code).
2. Write a simple C program. For example, you can create a file named hello.c with the following code:

#include <stdio.h>

int main() {
    printf("Hello, World!\n");
    return 0;
}

3. Save the file in a directory where you can easily find it (e.g., C:\CPrograms).

Step 3: Compile the C Program

With your program written, you can now compile it using the GCC compiler.

1. Open the Command Prompt (cmd).

2. Navigate to the directory where you saved your C program. For example:

   cd C:\CPrograms
   

3. Compile the program using the following command:

   gcc hello.c -o hello.exe
   

   • hello.c is your source file.
   • -o hello.exe specifies the output filename.

4. If there are no errors, the command prompt will return to the input line without any messages.

Step 4: Run Your Compiled Program

Now that you have compiled your program, you can run it.

1. In the command prompt, type the following command:

   hello.exe
   

2. You should see the output:

   Hello, World!
   

Conclusion

You have successfully installed MinGW, written a simple C program, compiled it using GCC, and run the executable. This process is fundamental for any C programming tasks you will undertake.

Next Steps

• Experiment with different C programs to deepen your understanding.
• Explore other functionalities of GCC, such as debugging options and optimization flags.
• Consider learning about integrated development environments (IDEs) to streamline your programming workflow.