Its memory has no size limit and is relatively slow to read from and to write on since pointers are needed to access memory on the heap. ![]() Unlike the stack, you have to manage the memory (allotting and freeing variables). When discarded memory is not released, memory in the heap will be written off, making it unavailable for other processes. Failure to do so can cause a memory leak to your program. After allocating memory on the heap, you are supposed to use free() to retain the memory when you no longer need it. To allocate memory on the heap, you must use calloc() or malloc(), both of which are built-in C functions. The heap memory section is larger compared to the stack.
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