In c some programmes only consist stdio.h only and no getch(); function but some has with conio.h what is diffrence

Question

what is the use of conio.h and stdio.h preprocessers
the absence conio.h has usually seen in function programmes
please describe?

Answer 1

The stdio.h is a header file which is used to make input output operations in a c program. While conio.h is console input output. It is not a standard header but used for some functions like you cannot use getch() unless conio.h is specified.