Include iostream.h: Stream classes form the foundation for handling

Stream classes form the foundation for handling input or output (I/O) operations. They provide a clean and efficient way to read data from sources like the keyboard or files and write data to destinations like the screen or files. Stream Classes Hierarchy in C++ The stream classes are organized in a class hierarchy ( a family tree of classes). This helps the language handle different types of input/output operations using common features, while still supporting special cases like file I/O ... C++ Online Compiler Write, Run & Share C++ code online using OneCompiler's C++ online compiler for free. It's one of the robust, feature-rich online compilers for C++ language, running on the latest version 17. Getting started with the OneCompiler's C++ compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as C++ and start coding! Read inputs from stdin OneCompiler's C++ online compiler supports stdin and users can give inputs to programs using ... Declares objects that control reading from and writing to the standard streams. This include is often the only header you need to do input and output from a C++ program. Example explained Line 1: # include < iostream > is a header file library that lets us work with input and output objects, such as cout (used in line 5). Header files add functionality to C++ programs. Line 2: using namespace std means that we can use names for objects and variables from the standard library.