Question

1. What are the two memory pools for programs running a modern operating system? 2. Given the following program: #includec iostream» using namespace std; void func1(int); int main( int a 5, b 10; func1(a): return e; void func1 (int a) int z[2]; int y a. What is on the stack before the first function call (assume a memory starting address of 0x1018)? b. What is on the stack after the function call is executed (before returning from the function)? . How do you allocate memory on the heap? How do you deallocate memory on the heap? How do you deallocate a dynamic array?

please answer all 5 questions, thanks.

Answer 1

Answer 1:

There are two memory pools in a modern operating system:

• Stack
• Heap

Answer 2:

(a)

4 bytes 0x101C a=5 main function stack frame 4 bytes b 10 0x1018 STACK

(b)

4 bytes 0x1028 func1 function stack frame 4 bytes 0x1024 4 bytes 2I0] 0x1020 4 bytes 0x101C a 5 main function stack frame 4 bytes b 10 0x1018 STACK

Answer 3:

Memory on heap, in C++, is allocated using new operator.

For example:-
int *p = new int; // This will allocate memory for 1 int (4 bytes) on the heap

Answer 4:

Memory on the heap, in C++, can be deallocated using delete operator.

For example:-
int *p = new int; // This will allocate memory for 1 int (4 bytes) on the heap
delete p; // This will deallocate memory for p

Answer 5:

A dynamic array is deallocated using delete[] operator.

For example:
int *p = new int[5]; // This will allocate memory for 5 ints (20 bytes) on the heap
delete[] p; // This will deallocate memory for p

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