Can u tell me what "#include<iostream>" do?

Question

I didn't get it.

Answer 1

iostream is an inbuilt header/library file which contains inbuilt classes and functions to access those we need to import it

Answer 2

simply telling all header files are already written codes that we use to make our programming tasks easier, or else we would have to write 1os of lines of code just to print something

Answer 3

it is a library file which defines the input output objects(cin, cout)

Answer 4

iostream helps define the cin and cout objects we use in codes for taking input or printing output

it's the input output stream class defined in standard c++ library, that we can use with the #include command

all header files are accessible using include command example
#include <iostream>

#include <string> for using string predefined functions

#include <math> for using predefined math functions