Object Oriented Programming Practice Test 9

1. Which constructor definition will produce a compile time error?

className(char c,int x=0);

className(char c);

className(int x=0);

className(int x=0,char c);

2. If a function have all the default arguments but still some values are passed to the function then ______________

The function will use the values passed to it

The function will use the default values as those are local

The function can use any value whichever is higher

The function will choose the minimum values

3. How does compiler decide the intended object to be used, if more than one object are used?

Using void pointer

Using object name

Using an integer pointer

Using this pointer

4. Which among the following is true?

this pointer is passed with help of pointer member functions are called

this pointer is passed explicitly when member functions are called

this pointer is passed implicitly when member functions are called

this pointer is passed with help of void pointer member functions are called

5. Which is the correct syntax to call a member function using pointer?

pointer::function()

pointer->function()

pointer.function()

pointer:function()

6. If a pointer to an object is created and the object gets deleted without using the pointer then __________

It becomes dangling pointer

It becomes null pointer

It becomes void pointer

It becomes zero pointer

7. If class C inherits class B and class B inherits class A ________________

Class C object can’t be upcasted

Class C object can be upcasted to object of class B only

Class C object can be upcasted to object of class A only

Class C object can be upcasted to object of either class A or B

8. Which syntax doesn’t execute/is false when executed?

this.function(!this)

if(&object != this)

if(&function !=object)

this.if(!this)

9. Which is the correct interpretation of the member function call from an object, object.function(parameter);

function(&object,&parameter)

object.function(&this, parameter)

object(&function,parameter)

function(&object,parameter)

10. If a constructors should be capable of creating objects without argument and with arguments, which is a good alternative for this purpose?

Use default constructor

Use constructor with all default arguments

Use zero argument constructor

Use constructor with one parameter