This is better stated as which computers don't have C++! The answer- almost none, it is so widespread. It is a nearly universal programming language and can be found on most microcomputers, and all the way up to big computers costing millions of dollars. There are C++ compilers for just about every type of operating system.
In C++ programing language, all header files end with .H extension. In standard C++, all devices are accessed and used as a file. One such header file is iostream.h in C++ programming language. In this, all input and output devices are treated as files. Let's quickly look at what are the input and output devices mean in C++ program. Standard Input Device - Keyboard Standard Output Device - Monitor Standard Error Device - Screen or monitor In C++, input and output are not defined within, and are implemented with the help of a component of the C++ standard library which is I/O library. A file is read simply as a stream of bytes at the lowest level. But at a user level, a file consists of possibly mixed data types which can be characters, arithmetic values class, objects etc. What are the predefined streams in I/O Library? As discussed above there are input, output and error library in c++, they have some predefined streams objects as well w...