Iostream vs studio.h

Question

i was learn with studio.h and in this app use iostream.what is the diffences between both headers
thxs and sorry for my English it isnt my first lenguaje

Answer 1

<stdio.h> is a C header (can also be used in C++, commonly known as <cstdio>) which provides input/output functionalities through the use of printf(), scanf().
<iostream> is a C++ header file which provides input stream and output stream objects, e.g. std::cout, std::cin.