Q1 . what is a friend function?

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SOLUTION

Friend funtions are non member functions in C++ that have access to the private and protected members of a class.

Q2 . What are types of inheritance?

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SOLUTION

Inheritance is accessing the elements of a parent class in its child class.some examples are

multiple inheritance

multilevel inheritance

Single Inheritance

hybrid Inheritance

Q3 . What is Encapsultion?

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SOLUTION

It is the concept of bundling the data and the functions that manipulate it together.

Q4 . What is call by value?

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SOLUTION

In call by value when a function is invoked only values are passed to the function.Any changes made in the function do not affect the original variables.

Q5 . What is call by reference?

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SOLUTION

In call by reference the reference of the variables is passed to the function during invocation.So when the values are changed in the function the actual values get changed.

Q6 . What is enumeration?

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SOLUTION

Enumeration is a user defined data type with defined values inside.

Example

enum days{

today=0,

tom=1,

};

Q7 . what is this pointer?

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SOLUTION

This pointer holds the address of the current object.

Q8 . What is a try catch block?

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SOLUTION

The try catch block is used for exception handling.

The try block is used to encompass the exception prone block

the catch block is used to catch the exception

throw is used to throw an exception

example

try{throw a=2;}

catch (int k)

{ }

Q9 . How to define a line break in C++?

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SOLUTION

to define a line break in c++ we use a endl

for example cout<
this will create a line break.

Q10 . How to do you comment out codes in C++?

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SOLUTION

In C++ we want to comment out a single line it would be using //this will be commented.

to comment out multiple lines we can use /**/

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