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