C++ Examples
Dave Braunschweig
Overview
C++ is a general-purpose programming language. It has imperative, object-oriented and generic programming features, while also providing facilities for low-level memory manipulation. C++ was developed by Bjarne Stroustrup at Bell Labs starting in 1979 as an extension of the C language. The C++ programming language was initially standardized in 1998.[1]
C++ is one of the most popular current programming languages[2] and is often used in computer science courses.
Example
Hello World
// This program displays "Hello world!" // // References: // http://www.cplusplus.com/doc/tutorial/program_structure/ #include <iostream> int main() { std::cout << "Hello world!"; }
Output
Hello world!
Discussion
Each code element represents:[3]
//
begins a comment#include <iostream>
includes standard input and output streamsint main()
begins the main function, which returns an integer value{
begins a block of codestd::cout
is standard output<<
directs the next element to standard output"Hello world!"
is the literal string to be displayed;
ends each line of C++ code}
ends a block of code
C++ IDEs
There are many free cloud-based and local IDEs available to begin coding in C++. Check with your instructor or do your own research for recommendations.