Question

8.What is the proper syntax for malloc

a.What is Malloc’s parameter

b.What does sizeofdo?

9.If I want to provide new memory to a pointer that already has memory allocated to it, what must I do before I rerun “malloc” on the pointer?

Answer 1

Ans8: Syntax for malloc: void *malloc(byte-Size);

example: int *p = (int *)malloc(5*sizeof(int));

a) parameter for malloc: byte-size (size of the memory block, in bytes)

b) sizeof is used for calculating the size of the datatype

9. we must run free() method passing the pointer as the argument. Example: say the pointer is ptr, so we must run free method as:- free(ptr);