C++

The C++ programming language was developed by Bjarne Stroustrup starting in 1979 as an enhancement to the C language. It is widely used for systems software, application software, embedded software and entertainment software such as video games. It has influenced other popular programming languages, most notably C# and Java.

// This sample program calculates factorials #include <iostream> using namespace std; int factorial( int ); int main( void ) { int number = 7; cout << number << " factorial is: " << factorial(number) << endl; return 0; } int factorial( int number ) { int temp; if( number <= 1 ) return 1; temp = number * factorial( number - 1 ); return temp; }