Question

Is the nesting of functions possible in the object oriented languages like C#, Java, C++ etc . If so, can anyone give an example?

Answer 1

Having nested function is irrelevant to being object-oriented.

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• C# doesn’t have nested functions, but you can use lambdas (See Why doesn't C# have lexically nested functions?). So are all other programming languages that support anonymous functions (including C++0x).
• You may create a local class, and overload the call operator to simulate a nested function (See is it possible in C or C++ to create a function inside another?).
• Meanwhile, many non-object-oriented languages like (the original) Pascal support nested functions natively, and GCC support it in C as an extension.