What is the significance of classes in oop?
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Have you ever used threads?
What is the benefit of oop?
Why do we use oops?
what is the abstract class,interface ,its difference with a programatic eg.? hi,recently i went for an interview they ask me what is abstract class ,interface and its difference I said abstract class contain abstact method ,abstract method is a method with no body.Abstract class cannot be instantiated.Abstract class is a base class it required derived class for the implementation of method. Interface is a syntactical contract that all derived class should follow it define properties ,method,events which are known as member of interface. Then They asked me what is the difference between them. I said abstract class interface 1.abstact class can implement method 1.interface cant 2.abstact class can contain constructor, 2.interface cant destructor 3.abstract class cannot support multiple 3.interface support inheritance etc Then they said some different answer I said dont no. Then they ask me when i should make abstract class for an project and when i should make interface. I said if suppose there is two class which must be having method with different logic then we sholud make abstract class. and if suppose we have two class having method .with different logic then we can make interface . Am i correct with my explaination.if not correct me .please provide me that when should we create abstract class and interface and what is difference .please help me
what is single inheritance?
what is the main difference between sizeof() operator in c and c++
What is the expansion of OOPS?
What is new keyword in oops?
What is function overloading?,describe it with the example.
write a program in c++ to overload the function add (s1,s2) where s1 and s2 are integers and floating point values.
What is a macro? And how is a macro same as a template?
1.what are two type of classe members called? 2.what is data hiding and data encapsulation? 3.how do you make a class member visible aouside its class? 4.what is the default visibility of a class data member? 5.what are the advantages of oop over the structured programing?