Question

C++ Programming

QUESTION 10 Based on the following C++ code, what is the output of "pvari->print(" function call? class A public void print cout << "Hello from A": 1 virtual void print2() {cout << "Hello from A2";} class B public A public void print) { cout << "Hello from B:1 virtual void print2() {cout << "Hello from B2": 1 int main() Avari Apvarl-new B; return 0; 1 o a Hello from A2 ob Hello from B O Hello from A od Hello from B2 QUESTION 11 If you don't use the public keyword, the visibility of a member is private by default True O False QUESTION 12 class : publie B Above statement means that class B is derived from class A True O False

Answer 1

10.

Ans: (c) Hello from A

Because here we created object for A that is A *pvar1=new B

pvar1->print() call checks for a print() method in class A

thats why "Hello from A" is printed.

main.cpp 1 #include <iostream> 2 using namespace std; 3 4. class A{ 5 public: 6 void print(){cout<<"Hello from A";} 7 virtual void print2(){cout<<"Hello from A2";} 8 }; 9. class B: public A{ 10 public: void print(){cout<<"Hello from B";} 12 virtual void print2(){cout<<"hello from B2";} 13 }; 14 15 - int main() { 16 A vari; 17 A *pvar1=new B; 18 pvar1->print(); // calling print() function in base class A return 0; 20 } 11 WN 19 input Hello from A ... Program finished with exit code 0 Press ENTER to exit console.

11.

Ans: True

If we dont use a public keyword , it is private by default.

12.

Ans: False

class A: public B{

}

means class A is derived from class B