Explain about iostrem.h header file

Answer 1

do u mean
#include <iostream> //without the .h
well then it's a header file that contains th IO classes , the whole hirarchy of them , they provide input/output functionality (eg. cout,cin)
Note :
in C it was called stdio.h

Answer 2

In C++, the input and output functions are already defined but they are stored in the form of classes in a file named iosteam, so to access the input and output functions you have to include iostream

Answer 3

thanks gurav

Answer 4

your welcome!!!!😊