Question 1

What happens when you attempt to compile and run the following code? #include #include using namespace std; class A { public: int x; A() { x=0;} A(int x) { this?>x=x;} }; class B : private A { public: using A::x; B() { x=1;} B(int x) {this?>x = x;} }; int main () { B c1; B c2(?5); cout << c1.x; cout << c2.x; return 0; }

Options :

A : It prints: 5

B : It prints: 1?5

C : It prints: 05

D : It prints: 0

Answer: B

Question 2

What happens when you attempt to compile and run the following code?

Options :

A : It prints: T

B : It prints an empty line

C : It prints: Tesc

D : It prints: st

Answer: C

Question 3

What happens if characters 'w', 'o', 'r', 'l' and 'd' are entered as input? #include #include using namespace std; int main() { string s1 = "Hello"; string s2; getline( cin, s2 ); cout << s1 + s2; return( 0 ); }

Options :

A : It prints: Helloworld

B : It prints: Hello

C : It prints: world

D : Compilation error

Answer: A

Question 4

How could you pass arguments to functions?

Options :

A : by value

B : by reference

C : by pointer

D : by void

Answer: A,B,C

Question 5

What happens when you attempt to compile and run the following code? #include #include using namespace std; class A { protected: int y; public: int x, z; A() : x(1), y(2), z(0) {} A(int a, int b) : x(a), y(b) { z = x * y;} void Print() { cout << z; } }; class B : public A { public: int y; B() : A() {} B(int a, int b) : A(a,b) {} void Print() { cout << z; } }; int main () { A b(2,5); b.Print(); return 0; }

Options :

A : It prints: 10

B : It prints: 2

C : It prints: 5

D : It prints: 1

Answer: A

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