Draw the runtime stack for the following C++ program. (Show any global variables and include main in the runtime stack) Please explain. I really struggle with these types of questions

Use

retAddr for the return address

retVal for the return value

NA not used

#include

using namespace std;

int ounces;

void size(int& ou, int lbs) {

ou = lbs*16;

}

int main() {

int lbs;

cout << "Enter number of pounds";

cin >> lbs;

size(ounces, lbs);

cout <<"You have " << ounces << "ounces";

return 0;

}