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#include <iostream> class A { public: int value; }; void callByValuePtrAssign(A* a) { a = new A; a->value = 0; } void callByReferencePtrAssign(A* &a) { a = new A; a->value = 0; } int main() { A* a = new A; a->value = 3; cout << "Initial value:" << a->value << endl; callByValuePtrAssign(a); cout << "After call by value:" << a->value << endl; callByReferencePtrAssign(a); cout << "After call by reference:" << a->value << endl; return 0; }
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