Without Book Interview Questions and Answers | Online Test | Moct Test
Download Android App in your Android Device from Google Play Store
- Search for "Withoutbook Practice Exam Test" in Mobile/Tablet Play Store
Institute Training Search by Name or Email

Exams Attended

Make Homepage

Bookmark this page

Subscribe Email Address

C++ Interview Questions and Answers

Ques 16. What are the advantages of inheritance?

Ans.
? It permits code reusability.
? Reusability saves time in program development.
? It encourages the reuse of proven and debugged high-quality software, thus reducing problem after a system becomes functional.

Is it helpful? Add Comment View Comments
Ques 17. What is the difference between declaration and definition?
Ans.
The declaration tells the compiler that at some later point we plan to present the definition of this declaration.
E.g.: void stars () //function declaration
The definition contains the actual implementation.
E.g.: void stars () // declarator
{
for(int j=10; j>=0; j--) //function body
cout<<?*?;
cout<<endl; }
Is it helpful? Add Comment View Comments
Ques 18. What is the difference between an ARRAY and a LIST?
Ans. Answer1
Array is collection of homogeneous elements.
List is collection of heterogeneous elements.

For Array memory allocated is static and continuous.
For List memory allocated is dynamic and Random.

Array: User need not have to keep in track of next memory allocation.
List: User has to keep in Track of next location where memory is allocated.

Answer2
Array uses direct access of stored members, list uses sequencial access for members.

//With Array you have direct access to memory position 5
Object x = a[5]; // x takes directly a reference to 5th element of array

//With the list you have to cross all previous nodes in order to get the 5th node:
list mylist;
list::iterator it;

for( it = list.begin() ; it != list.end() ; it++ )
{
if( i==5)
{
x = *it;
break;
}
i++;
}
Is it helpful? Add Comment View Comments
Ques 19. Does c++ support multilevel and multiple inheritance?
Ans.
Yes.
Is it helpful? Add Comment View Comments
Ques 20. What is a template?
Ans.
Templates allow to create generic functions that admit any data type as parameters and return value without having to overload the function with all the possible data types. Until certain point they fulfill the functionality of a macro. Its prototype is any of the two following ones:


template <class indetifier> function_declaration; template <typename indetifier> function_declaration;
The only difference between both prototypes is the use of keyword class or typename, its use is indistinct since both expressions have exactly the same meaning and behave exactly the same way.
Is it helpful? Add Comment View Comments

4) Does c++ support multilevel and multiple inheritance? 5) What is a template? " />

Most helpful rated by users:

©2016 WithoutBook