Your First C++ Program

Now that you have installed a C++ compiler and set up your development environment, you are ready to write your first C++ program.

The traditional first program in most programming languages is the Hello World program. It simply prints a message on the screen.

Example Program

#include <iostream>
using namespace std;

int main() {

    cout << "Hello, World!";

    return 0;
}

#include <iostream> – This line tells the compiler to include the input-output stream library. It allows us to use cout for printing output.
using namespace std; – This allows us to use standard library names like cout without writing std:: every time.
int main() – This is the main function where the program starts execution.
cout << “Hello, World!”; – This statement prints text to the screen.
return 0; – This ends the program and indicates that it ran successfully.

After writing the program, you need to compile and run it.

Compile the program using the following command:

g++ program.cpp -o program

Run the compiled program:

./program

Hello, World!

Next, learn about C++ Syntax.