Library/pre-defined function in C ?


C library that comes with C compiler has a collection of various functions which perform standard and per-defined tasks. These functions written by designers of C compilers are called library functions.

Example:-
pow(x,y)
sqrt(x)
printf()
scanf()

Note:

The declaration of scanf() and printf() functions are available in the header file "stdio.h" and declaration of sqrt() function is available in header file "math.h"