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C++ — Hello World

The classic hello-world in C++ — iostream and std::cout — for testing highlighters, C++ compilers, and parsers.

Preview — first 8 linescpp
// The classic first program, in C++.
#include <iostream>

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

Specifications

Language
C++
Kind
hello-world
Lines
7
Encoding
UTF-8
Line Endings
LF

What is a .cpp file?

C++ (.cpp) is a plain-text source file for the C++ programming language — a statically typed, compiled language that extends C with classes, templates, operator overloading, the Standard Template Library, and RAII. It is used for high-performance applications, game engines, and systems software.

How to use this file

Use an example .cpp file to test syntax highlighters, C++ compilers (g++, clang++), static analysers and formatters, and parser or language-detection tooling against real language constructs.

Generated by generation/code_samples.py. Free for any use, no attribution required — license.