char* malloc(sizeOf)
Returns a pointer in the heap with the specified size. One major difference is that it does not initialize the memory.
char* calloc(numElements, sizeOfElement)
Returns a pointer in the heap with the specified size for a number of elements - usually for an array.
char* realloc(ptr, newSize)
Returns a pointer in the heap after growing or shrinking a block a memory that was allocated by using malloc, calloc or realloc.
void free(ptr)
No return value. Deallocates memory previous allocated by malloc, calloc or realloc. ptr is unchanged.
