1. What are the advantages of passing arguments by reference?

1. 1. There is no need to call constructors for parameters (i.e. faster)

   
   
   

   2. Changes to parameter values within the function also affect the original arguments.

   
   
   

   3. There is need to copy parameter values (i.e. less memory used)

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   *There is no need to call constructors for parameters (i.e. faster).
   *Changes to parameter values within the function also affect the original arguments.
   *There is need to copy parameter values (i.e. less memory used).
   

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2. When our function doesn’t need to return anything means what will we use/send as parameter in function?

1. 1. blank space

   
   
   

   2. void

   
   
   

   3. both blank space & void

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   blank space

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3. What will happen while using pass by reference

1. 1. The location of variable in memory is passed to the function so that it can use the same memory area for its processing

   
   
   

   2. The function declaration should contain ampersand (& in its type declaration)

   
   
   

   3. The values of those variables are passed to the function so that it can manipulate them

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   In pass by reference, we can use the function to access the variable and it can modify it. Therefore we are using pass by reference.

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4. Overloaded functions are

1. 1. Two or more functions with the same name but different number of parameters or type

   
   
   

   2. Very long functions that can hardly run

   
   
   

   3. One function containing another one or more functions inside it

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   Two or more functions with the same name but different number of parameters or type

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5. What is the output of the following program?
   

   #include 
       using namespace std;
       int calculate(int p, int q)
       {
           return (p * q);
       }
       float calculate (float p, float q)
       {
           return (p / q);
       }
       int main()
       {
           int n = 10, m = 3;
           float r = 30.0, s = 10.0;
           cout << calculate(n, m) <<" ";
           cout << calculate (r, s);
           return 0;
       }
   

1. 1. 10 3

   
   
   

   2. 30.0 10.0

   
   
   

   3. 30 3

   
   
   

   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 divide and multiply the values.

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