91. To which type of class, We can apply RTTI?

1. 1. Polymorphic

   
   
   

   2. Derived

   
   
   

   3. Encapsulation

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   RTTI is available only for classes which are polymorphic, which means they have at least one virtual method.

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92. Which is used to solve the memory management problem in c++?

1. 1. arrays

   
   
   

   2. stack

   
   
   

   3. smart pointers

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   smart pointers

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93. What are the operators available in dynamic memory allocation?

1. 1. compare

   
   
   

   2. new

   
   
   

   3. delete

   
   
   

   4. both new & delete

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   new and delete operators are mainly used to allocate and deallocate during runtime.

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94. What is the output of this program?
    

    #include <iostream>
        #include <typeinfo>
        #include <exception>
        using namespace std;
        class BaseClass 
        { 
            virtual void f(){} 
        };
        class DerivedClass : public BaseClass {};
        int main () 
        {
            try 
            {
                BaseClass* ptr1 = new BaseClass;
                BaseClass* ptr2 = new DerivedClass;
                cout << typeid(*ptr1).name() << " ";
                cout << typeid(*ptr2).name();
            } 
            catch (exception& excep) 
            { 
                cout << "Exception: " << excep.what() << endl; 
            }
            return 0;
        }
    

1. 1. 9BaseClass

   
   
   

   2. 12DerivedClass

   
   
   

   3. 9 12

   
   
   

   4. Both 9BaseClass and 12DerivedClass

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   In this program, We apply the typeid to the polymorphic class.

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95. What is the Run-Time Type Information?
    

1. 1. Information about the given block

   
   
   

   2. Information about an object’s data type at runtime

   
   
   

   3. Information about the variables

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   With the help of RTTI, We can get the information about the data type at the runtime.

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