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Question 1

What happens when you attempt to compile and run the following code? #include using namespace std; int main() { int i=5; switch(i) { case 1: cout<<"Hello"; break; case 2: cout<<"world"; break; case 3: break; default: cout<<"End"; } return 0; }

Options :

A : It prints: Hello

B : It prints: world

C : It prints: End

D : It prints: Helloworld

Answer: C

Question 2

What is the output of the program? #include #include using namespace std; struct Person { int age; }; class First { Person *person; public: First() {person = new Person; person?>age = 20; } void Print(){ cout << person?>age; } }; int main() { First t[2]; for (int i=0; i<2; i++) t[i].Print(); }

Options :

A : It prints: 10

B : It prints: 2020

C : It prints: 22

D : It prints: 00

Answer: B

Question 3

What happens when you attempt to compile and run the following code? #include using namespace std; int main() { const int x=0; const int *ptr; ptr = &x; cout<<*ptr; return 0; }

Options :

A : It prints: 0

B : It prints address of x

C : It prints: 1

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?

Options :

A : It prints: 1

B : It causes a compilation error

C : It prints: 0

D : It prints: My exception,

Answer: B