What is iOStream

Question

Am a new learner

Answer 1

iostream (input-output stream) is a standard library using which we are enable to use its functions like cin (to get inputfrom user) , cout (to display ) , getline, endl ,etc.
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Answer 2

iostream is a c++ library that enables you to do things like
1.Print something to the screen
2.Read input from the user
also lets you do more.