What is a class in oop?

0 Answers  

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What is byval and byref? What are differences between them?

0 Answers   HCL, Wipro,

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I am developing a payroll system mini project.I used file concept in program for reading and writing.When the program is reloading into the memory that is if i execute next time the file was cleaned and adding data from the starting this is my problem.I want to strore the previous data and if i want to add any record that should be next of previous data.Please help me.

0 Answers  

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difine hierarchical inheritance.

9 Answers   ASD Lab, TCS,

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What is the difference between inheritance and polymorphism?

0 Answers  

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what is the difference between a package and a software?

3 Answers  

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What is the difference between a constructor and a destructor?

0 Answers  

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Difference ways of Polymorphism?

3 Answers  

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Write 7 differences between "Public" function and "Private" function?

2 Answers   IBM, Wipro,

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How compiler selects(internally) required overridden function in inheritance?

2 Answers   CSC, Infinite Computer Solutions,

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Why is abstraction used?

0 Answers  

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What is virtual function?where and when is it used?

2 Answers   Sitel,

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