Conio.h
It is a library file which is included in the program this is used to use
Clrscr ( )
getch ( )
getchar ( ) etc.
We do not need to include this file in C program. It is necessary for C++ programs. Conio stands for CONsole Input Output header file.
Math .h
This file is used for mathematical functions. These functions are like excel functions:-
Eg. pow( ), sqrt ( ), sin ( ), tan ( ) etc.
