// 01_hello.cpp — Programming Fundamentals Using C++
// Unit 01 · Session 1.1 · Your first program
// Compile: g++ -std=c++17 -Wall -Wextra 01_hello.cpp -o hello
// Run:     ./hello
//
// The traditional first program. Lesson 1 explains every line below;
// typing it by hand (not pasting!) is part of the lesson.

#include <iostream>

int main() {
    std::cout << "Hello, world!\n";
    return 0;
}