When a C/C++ program is written, you write #include <stdio.h> or #include <iostream> at the top of program but have you ever wondered what are they. They are the Header Files, the first thing that you have to do in program is to understand the concept of these guys and you need to include these header files in the very first line of your program which appears like this: #include <header file>
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| Green line is a Header File |
