Question: 11 -

What is this operator called "?:" ?

relational

unrelational

casting operator

conditional

Answer:

conditional

Solution:

In this operator, if the condition is true means, it will return the first operator, otherwise second operator.

Question: 12 -

What is the use of dynamic_cast operator?

it will convert the operator based on precedence

it converts the virtual base object to derived class

it converts virtual base class to derived class

it converts the virtual base object to derived objects

Answer:

it converts virtual base class to derived class

Solution:

Because the dynamic_cast operator is used to convert from base class to derived class.

Question: 13 -

What will be the output of the following C++ code?

#include <iostream>
using namespace std;
int main() {

    int a = 5, b = 6, c;
    c = (a > b) ? a : b;
    cout << c;

    return 0;
}

6

4

7

5

Answer:

6

Solution:

Here the condition is false on conditional operator, so the b value is assigned to c.

Question: 14 -

What will be the output of the following C++ code?

#include <iostream>
using namespace std;
int main() {

    int a = 20, b = 10, c = 15, d = 5;
    int e;
    e = a + b * c / d;
    cout << e << endl;

    return 0;
}

50

80

70

60

Answer:

60

Solution:

Scope resolution operator is having the highest precedence in c++.

Question: 15 -

Which operator is having the highest precedence?

equality

unary

shift

postfix

Answer:

equality

Solution:

The operator which is having the highest precedence is postfix and lowest is equality.