Complete guide on stdlib.h in C

is the header for the General Purpose Standard Library of C programming language which declares a variety of utility functions for type conversions, memory allocation, process control and other similar tasks. It also has multiple data types and macros defined in the header.

To use this header in C, you have to type the following line at the top of your C program:

#include

The #include specifies inclusion of a system header file named x/*y.
This header can also be used in C by using ...