How much memory will the following program have allocated? Memory Management. As

Question

How much memory will the following program have allocated?

Memory Management. Assume that variables of type int or float each consume 4 bytes of memory and that each pointer also consumes 4 bytes of memory. How much memory space (in bytes) will the following program have allocated - whether on the stack or dynamically, and whether leaked or not - by the time we reach Point A of the program, and how much memory space will have leaked by the time the program reaches point A: class A {int numltems; int* items; A(int n) {numltems = n; items = new int[numltems];}}; int main() {A* firstObject; for(int i=1; i

Explanation / Answer

In main

first statement is pointer to object = 4 bytes for pointer

in for loop object created

for iteration i = 1, pointer points to object of class with 1 array elemnt + one integer numItem + items pointer in class

4 bytes for items pointer + 4 bytes for integer variable numItem + 4 bytes for one array element = 12 bytes

for iteration i = 2 ,

4 bytes for items pointer + 4 bytes for integer variable numItem +8 bytes as 2 array items(4bytes*numberof items) = 16 bytes

for iteration i = 3;

4 bytes for items pointer + 4 bytes for integer variable numItem +12 bytes as 3 array items(4bytes*numberof items) = 20 bytes

When we reach point A: total memory allocated

object pointer + memory allocated in for loop for each object = 4 + 12 +16 +20 = 52 bytes.

Leaked memory by the time we reach point A:

only the pointer variables allocated using new becomes leaked memory as other memories go out of scope after main exists.Hence 4 bytes + 8 bytes+ 12 bytes for array elements = 24 bytes are leaked memory

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