C++ Hello World Tutorial

1. Writing Your First Program

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

#include <iostream>
using namespace std;

int main() {
    cout << "Hello, World!" << endl;
    return 0;
}
                

This code outputs the message "Hello, World!" to the console.

2. Compiling the Program

To compile your program, use a terminal or an IDE:

• Terminal: Run the command: g++ hello.cpp -o hello.
• IDE: Use the build/run feature of your chosen IDE.

3. Running the Program

After compiling, run the program:

./hello
                

You should see the output: Hello, World!.

4. Explanation of the Code

Key components of the program:

• #include <iostream>: Includes the library for input/output operations.
• using namespace std;: Simplifies access to standard library features.
• int main(): Entry point of the program.
• cout: Outputs text to the console.

5. Next Steps

Now that you've written your first program, explore additional topics like variables, loops, and functions to build your skills.