Hello, World!

Your First C++ Program

Every C++ program starts with #include directives that bring in standard library features, then a main() function — the entry point the OS calls when your program runs.

#include <iostream>
using namespace std;

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

• #include <iostream> — pulls in input/output streams
• using namespace std; — lets you write cout instead of std::cout
• cout << — sends text to the terminal
• endl — ends the line and flushes the buffer
• return 0; — signals success to the OS

You can chain multiple values:

cout << "Sum: " << 3 + 4 << endl;
// Output: Sum: 7

Your Task

Print exactly: Hello, C++!