Pure virtual functions are also called 'do nothing functions'.
e.g. virtual void abc() = 0;
When a pure virtual fnction is declared in the base class, the compiler necessitates the derived classes to define those functions or redeclare them are pure virtual functions. The classes containing pure virtual functions cannot be used to declare objects of their own. Such classes are called as abstract base classes.
Explain inline function?
Define Inline Function?
Friend function does not have this pointer associated with it. a. True b. False
In any ways, Non-member function cannot have access to private data of the class. a. True b. False
Function can be declared as friend maximum only in two classes. a. True b. False
If 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
Which of 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
Default return the type of functions in CPP is a. void b. long c. char d. int
The Inline functions may not work ______. 1. If function contain static variables 2. If function contain global and register variables 3. If function returning value consists looping construct(i.e. for, while) 4. If inline functions are recursive 5. If function contains const value a. Only 1,4,5 b. Only 2,3,5 c. Only 1,3,4 d. All of these
Assigning one or more function body to same name is called_______________. a. Function Overriding b. Function Overloading c. Both a and b d. None
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