What is #include<iostream>

Question

what is #include<iostream> where it is used.what its role in program and can i use this multiple times in a program .

Answer 1

iostream is the header file which contains all the functions of program like cout, cin etc. and
#include tells the preprocessor to include these header file in the program.

No u don't have to use it multiple times...
once included it will do it's job in a program

cout is console output
cin is console input. ... It is the predefined library function used for input and output also called as header files
check this link for more 👇
https://www.quora.com/What-means-include-iostream-h-in-C++

Answer 2

thanks for your guidance 🌛 DT 🌜 ...really nice👍