MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Heaps memory is allocated during the execution of programmers’ instructions. It is crucial to highlight that the name heap has nothing to do with the heap data structure. It is termed a heap because it is a collection of memory space that programmers can allocate and deallocate.

Detailed explanation-2: -The allocation and deallocation for stack memory is automatically done. The variables allocated on the stack are called stack variables, or automatic variables. Since the stack memory of a function gets deallocated after the function returns, there is no guarantee that the value stored in those area will stay the same.

Detailed explanation-3: -The heap is an area of memory available to allocate areas (“blocks”) of memory for the program.

Detailed explanation-4: -Heap allocation is the most flexible allocation scheme. Allocation and deallocation of memory can be done at any time and any place depending upon the user’s requirement. Heap allocation is used to allocate memory to the variables dynamically and when the variables are no more used then claim it back.

Detailed explanation-5: -The size of memory to be allocated is known to the compiler and whenever a function is called, its variables get memory allocated on the stack. And whenever the function call is over, the memory for the variables is de-allocated.