In the examples so far, the programs have only had as much memory available as has been declared for the variables at compile time. This is referred to as static allocation. If any additional memory is needed at runtime, it becomes necessary to use dynamic allocation. The C standard library provides several functions for managing dynamically allocated memory, including malloc, free, realloc, and calloc. These functions are found in the stdlib.h header file.
Malloc
The malloc function
takes a size in bytes and returns a pointer to a block of free memory of that size. ...
