What is the purpose of the #include directive in C++?To include standard libraries and other headersTo define a classTo create a new namespaceTo initialize variables

The purpose of the #include directive in C++ is to include standard libraries and other headers. This allows the programmer to use functions and classes that are defined in those libraries and headers. This directive essentially copies and pastes the content of the specified file into the current file, enabling the compiler to read and understand the code. It does not define a class, create a new namespace, or initialize variables.