Question

Difference between library functions and user defined functions in c language

Answer 1

library functions are defined by developer itself and user defined function should be defined by any user who is using or operating computer system.

For example. c is developed by Daniel Ritchie ,he developed all the library functions and user defined functions are use by the computer system operator I. eBay anyone who easily operator computer

Answer 2

The functions which are already exist in the computer is known as library function.function created by urer known as user defined function.    Printf ()&scanf() example for library function