Syntax & Hello World

A C++ program follows a structure: include headers, decide whether to use a namespace, write your program logic inside the main() function, and close each statement with a semicolon. Once you understand this flow, reading code later becomes a lot easier.

#include <iostream>
using namespace std;

int main() {
    cout << "Hello World!" << endl;
    cout << "C++ is ready.";
    return 0;
}

using namespace std; is included, so you can write std::cout as just cout. endl starts a new line. main() runs the code inside it in order, from top to bottom.

Hello World! C++ is ready.