a2zinterviews

46.	What is the type of 'this' pointer?
	It is a constant pointer type. It gets created when a non static member function of a class is called this pointer.
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47.	What is the difference between late binding and early binding?
	Late binding refers to functions calls that are not resolved until run time while early binding refers to the events that occur at compile time. Late binding occurs through virtual functions while early binding takes place when all the information needed to call a function is known at the time of compiling. Early binding increases the efficiency. Some of the examples of early binding are normal function calls, overloaded function calls, and overloaded operators etc.
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48.	What is Standard Template Library (STL)?
	A library of container templates approved by the ANSI committee for inclusion in the standard C++ specification. A programmer who then launches into a discussion of the generic programming model, iterators, allocators, algorithms, and such, has a higher than average understanding of the new technology that STL brings to C++ programming.
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49.	When is the variable called as garbage?
	When the variables get undefined values known as garbage.
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50.	When are the variables to be declared?
	Declaration statement variables need to be declared and defined before they are used in a program. Declaration of a variable introduces a variable's name and its associated data type.
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