please explain the concept of nested functions and recursive functions, (with example)
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@vimalgeorge1999
A recursive function is a function in code that refers to itself for execution. Recursive functions can be simple or elaborate. They allow for more efficient code writing.
Simple examples of a recursive function include the factorial, where an integer is multiplied by itself while being incrementally lowered. Many other self-referencing functions in a loop could be called recursive functions, for example, where n = n - 1 given an operating range.
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@vimalgeorge1999
A nested function is a function that is completely contained within a parent function. Any function in a program file can include a nested function.
The primary difference between nested functions and other types of functions is that they can access and modify variables that are defined in their parent functions.
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