INTERVIEW QUESTIONS C++ INHERITANCE IN C++ DETAILS

Question: what are the advantages and disadvantages of inheritance?

Answer: we can call many classes by using one class. for ex;;<br> class a1<br>{<br>int a;<br>public:<br>void get()<br>{<br>cout<<"<br>enter number";<br>cin>>a;<br>}<br>void dis()<br>{<br>cout<<"<br>number is"<<a;<br>}<br>};<br>class d1<br>{<br>int d;<br>public:<br>void get1()<br>{<br>get();<br>cout<<"enter number";<br>cin>>d;<br>}<br>void dis1()<br>{<br>dis()<br>cout<<"number is"<<d;<br>}<br>};<br>void main()<br>{<br>d dd;<br>dd.get1();<br>dd.dis1();<br>}

we can call many classes by using one class. for ex;;<br> class a1<br>{<br>int a;<br>public:<br>void get()<br>{<br>cout<<"<br>enter number";<br>cin>>a;<br>}<br>void dis()<br>{<br>cout<<"<br>number is"<<a;<br>}<br>};<br>class d1<br>{<br>int d;<br>public:<br>void get1()<br>{<br>get();<br>cout<<"enter number";<br>cin>>d;<br>}<br>void dis1()<br>{<br>dis()<br>cout<<"number is"<<d;<br>}<br>};<br>void main()<br>{<br>d dd;<br>dd.get1();<br>dd.dis1();<br>} Source: CoolInterview.com

advantage of inheritance is code reuse. Source: CoolInterview.com

Advantages :-<br>1. Code reusablitiy as the same base class could be used by many child classes adding their specific properties.<br>2. Accessbility, while inheriting a parent class the child class's declaration specifies the access ( public, private or protected ) .So, one could restrict the visibility of the parent class to enhance security.<br><br>Disadvantage:- <br><br>Unnecessarily adds complexity for very small programs. Source: CoolInterview.com

Advantages :- <br><br>Inheritance allows a subclass implementation to be defined in terms of parent class. Hence it allows code reuse and often known as White Box Reuse.<br><br>DisAdvantage :- <br><br>Subclass become dependent on parent class implementation. This makes it harder to use especially if part of inherited implementation is no longer available. Source: CoolInterview.com

Saves memory and user time: because same code need not to write again aand again.<br><br>Easy to understand: It's easy to understand large program with use of inheritence Source: CoolInterview.com

assignment of tipic inheitance .type ,meit and demeits Source: CoolInterview.com

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