How is dynamic memory allocation done in C?

In C, dynamic memory is allocated from the heap using some standard library functions . The two key dynamic memory functions are malloc() and free(). The malloc() function takes a single parameter, which is the size of the requested memory area in bytes. It returns a pointer to the allocated memory.

Overview of functions The C dynamic memory allocation functions are defined in stdlib. h header ( cstdlib header in C++).

Malloc, calloc, realloc and free functions are for dynamic memory allocation, which are stored in heap section. And in stdlib. h header file.