Heap memory in C programming

Question

What is heap memory?

Whenever a call is made to malloc, memory is allocated from what is called a heap. Where exactly is the bunch. I know that the program in the main memory is divided into a command segment, where program operators are represented, a data segment where global data is stored, and a stack segment where local variables and corresponding function parameters are stored. Now, what about the heap?

Answer 1

The heap is part of your process address space. The pile can be grown or cut; you control it by calling brk(2)or sbrk(2). This is what it does malloc(3).

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