Question

what is the use of iostream.h

Answer 1

In starting of every program we use iostream.h because C++ does not have the function to input and display the output function internally so we use iostream.h to input the data in C++ as well as output it on the screen. So finally we got the answer for Why we use of iostream.h is c++ ?

Answer 2

Hey!

iostream.h is most important header file for basic input and output operations. iostream.h contain built-in functions  cout and cin for input-output. So, every C++ program should include iostream.h header file for performing input and  output operations.