Question

What does the preprocessor directive # include(iostream.h) do?

Answer 1

Hey Iostream.h is a header file that can be used to input any data and to see the output of the data.

Answer 2

#include is the preprocessor directive.

it says the compiler to begin the execution form this preprocessor directive file.

<iostream.h> is a pre defined header file which is used for input (cin) and output (cout) respectively.