Problem 1 [8pt] Consider the following class instances in a C++ program: 1 stati

Question

Problem 1 [8pt] Consider the following class instances in a C++ program: 1 static myClass A; 2 int main () myClass* B = new myClass(); 5 foo ) delete A; return 0; 10 void foo () 12 13 14 myClass C; A = new myClass(); a) (3pt) What is the storage allocation (static/stack/heap) for the myClass objects associated with A, B, C? b) (5pt) Consider one execution of the program above. The execution trace (a sequence of program state- ments executed at run time) of this program is 4 5 12 13 67 For each myClass object associated with A, B and C, as well as each pointer stored in A and B, write down their lifetimes (use a subset of execution trace, e.g., 12 13 to represent the lifetime). Assume the lifetime of a heap-allocated object starts from new and ends after delete.

Explanation / Answer

a)
Object A will have static allocation as it has been declared as static.

Objects B and C will have dynamic or Heap allocation as new operator always allocates memory dynamically

b)

life time:

A {4, 5, 12, 13, 6, 7}
B {4, 5, 12, 13, 6}
C {12, 13}

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