21⟩ A const object of a class can call non-const member function of the class. a. True b. False
b. False
C++ Access Control
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31 C++ Access Control Questions And Answers
22⟩ Const member function does not allow to modify/alter value of any data member of the class. a. True b. False
a. True
23⟩ Can we alter/modify the values of data members of a class inside const member function? a. Yes b. No.
a. Yes
24⟩ Can member functions of one class be friend functions of another class? a. Yes b. No
a. Yes
25⟩ A function can be declared as friend maximum only in two classes. a. True b. False
b. False
26⟩ A friend function does not have this pointer associated with it. a. True b. False
a. True
27⟩ Default values for a function are need to be specified from left to right only. a. True b. False
b. False
Default values need to be specified from Right to Left order.
Example:
void calculate(int amt, int years, float rate=7.8); //valid
void calculate(int amt, int years=5, float rate=7.8); //valid
void calculate(int amt=21000, int years, float rate=7.8); //Invalid
Third statement is invalid as we skipped second parameter of the function. Rule says that default values should be set from Right to Left order only. We cannot provide a default value to
specific parameter in the middle of an parameter list.
28⟩ In any ways, Non-member function cannot have access to the private data of the class. a. True b. False
b. False
29⟩ Function overloading can also be achieved if two or more functions differ only in their return types. a. True b. False
b. False
30⟩ If a program uses Inline Function, then the function is expanded inline at ___________. a. Compile time b. Run time c. Both a and b d. None of these
b. Run time
31⟩ Which of the followings is/are not false about friend function ? 1. It can be called / invoked with class object 2. It has objects as arguments 3. It can have built-in types as arguments 4. It must declared only in public part of a class 5. It does not have this pointer as an argument a. Only 2,4 b. Only 1,2,5 c. Only 2,3,5 d. All of these
c. Only 2,3,5
