51. What is the output of this program?
    

    #include 
        using namespace std;
        enum test 
        {
            p = 20, q, r
        };
        int main()
        {
            cout << p <<" " << q<< " " << r;
            return 0;
        }
    

1. 1. 20 21

   
   
   

   2. 21 22

   
   
   

   3. 20 21 22

   
   
   

   4. 20 22

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   If we not assigned any value to enum variable means, then the next number to initialized number will be allocated to the variable.

---

52. What is the output of this program?
    

    #include 
        using namespace std;
        enum Gender {
            male, female, transgender
        };
        int main()
        {
            cout << male<< female<< transgender;
            return 0;
        }
    

1. 1. male

   
   
   

   2. female

   
   
   

   3. transgender

   
   
   

   4. All of above

   
   
   

   5. 012

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: E

   The enumerator values start from zero if it is unassigned.

---

---

53. What is the output of this program?
    

    #include 
        using namespace std;
        int main()
        {
            enum channel {hotstar, zeetv, max};
            enum symbol {anamol, hotstar};
            int k = 0;
            for (k = hotstar; k <= zeetv; k++) {
               cout << k;
            }
            return 0;
        }
    

1. 1. Compilation Error

   
   
   

   2. Runtime Error

   
   
   

   3. Garbage Value

   
   
   

   4. hotstar

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   In function 'int main()':
   6:30: error: redeclaration of 'hotstar'
   5:23: note: previous declaration 'main()::channel hotstar'
   

---

54. Choose the incorrect option

1. 1. void is a special fundamental type

   
   
   

   2. void is used as the base type for pointers to objects of unknown type

   
   
   

   3. void is used when the function does not return a value

   
   
   

   4. void is also used when the value of a pointer is null

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   void fundamental type is used in the cases of a and c.

---

---

55. Choose the correct option.
    

     (i) extern int k;
        (ii0 int k;
    

1. 1. (i) declares and defines k, (ii) declares k

   
   
   

   2. both (i) and (ii) declare k

   
   
   

   3. (i) declares k, (ii) declares and defines k

   
   
   

   4. (i) declares the variable k and (ii) defines k

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   The keyword extern is not a definition and is not allocated storage until it is initialized.

---