a2zinterviews

26.	What is called unboxing?
	A technique which converts the object type back to its value type is called unboxing.
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27.	What is the use of out keyword?
	Output parameters are used to pass results back to the calling method. It is achieved by declaring the parameters with an "Out" keyword. It does not create new storage location
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28.	Define Interface.
	Interfaces are syntactically similar to abstract classes. However, in an interface, no method can include a body. The interface provides no implementation; it specifies what must be done, but not how.
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29.	List any four over loadable operators.
	Binary rithmetic → +, -, *, /, % Binary Bitwise → &, |, ^, <<, >> Unary Arithmetic → +, -, ++, -- Unary Bitwise → true, false, !, ~ Logical operators → ==, !=, >=, <=,>
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30.	Define Jagged Array.
	A Jagged array is an array of arrays in which the length of each array can differ. A Jagged array can be used to create a table in which the lengths of the rows are not same. Jagged array are declared by using sets of square brackets to indicate each dimension.
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