1. What is the return type of the conversion operator?

1. 1. no return type

   
   
   

   2. float

   
   
   

   3. int

   
   
   

   4. void

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   Conversion operator doesn’t have any return type not even void.

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2. What is the output of this program?
   

   #include <iostream>
       using namespace std;
       class Example
       {
           public:
           Example(int k) : num_k(k) { }
           public:
           int operator()(int k = 0) const 
           { 
               return num_k + k; 
           }
           operator int () const   
           { 
               return num_k; 
           }
           private:
           int num_k;
           friend int g(const Example&);
       };
       int fun(char Z)
       {
           return Z;
       }
       int main()
       {
           Example fun(6);
           cout << fun(5);
           return 0;
       }
   

1. 1. 6

   
   
   

   2. 5

   
   
   

   3. 11

   
   
   

   4. Compilation Error

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   In this program, we are adding its value with it itself, So only we got the output as 11.

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3. How many parameters does a conversion operator may take?

1. 1. as many as possible

   
   
   

   2. 3

   
   
   

   3. 2

   
   
   

   4. 1

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: E

   0 parameters does a conversion operator may take.

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4. Why we use the “dynamic_cast” type conversion?

1. 1. to be used in low memory

   
   
   

   2. result of the type conversion is an invalid

   
   
   

   3. result of the type conversion is a valid

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   It is used to check that operators and operands are compatible after conversion.

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5. Operator overloading is

1. 1. adding operation to the existing operators

   
   
   

   2. making the new operator

   
   
   

   3. making c++ operator works with objects

   
   
   

   4. giving new meaning to existing operator

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   Operator overloading is the way adding operation to the existing operators.

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