C Hello World Tutorial

1. Write Your First C Program

Create a new file named hello.c and add the following code:

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#include <stdio.h>

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

This simple program uses the printf function to print "Hello, World!" to the console.

2. Compile the Program

Use a C compiler to compile your program. For example, if you're using GCC:

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gcc hello.c -o hello

This command compiles hello.c into an executable named hello.

3. Run the Program

Execute the compiled program using:

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./hello

You should see the output:

Hello, World!

4. Explanation of the Code

• #include <stdio.h>: Includes the standard input/output library.
• int main(): Defines the main function, the entry point of the program.
• printf: Prints the specified message to the console.
• return 0;: Indicates that the program executed successfully.

5. Conclusion

Congratulations! You’ve written and run your first C program. This "Hello, World!" program is the foundation for learning more advanced C concepts.