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33.	What is a nested loop?
	A nested loop is a loop that runs within another loop. Put it in another sense, you have an inner loop that is inside an outer loop. In this scenario, the inner loop performed a number of times as specified by the outer loop. For each turn on the outer loop, the inner loop is first performed.
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34.	What are linked lists?
	A linked list is composed of nodes that are connected with another. In C programming linked lists are created using pointers. Using linked lists is one efficient way of utilizing memory for storage.
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35.	What is the different file extensions involved when programming in C?
	Source code in C is saved with .C file extension. Header files or library files have the .H file extension. Every time a program source code is successfully compiled, it creates an .OBJ object file, and an executable .EXE file.
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36.	What are reserved words?
	Reserved words are words that are part of the standard C language library. This means that reserved words have special meaning and therefore cannot be used for purpose other than what it is originally intended for. Examples of reserved words are int, void and return.
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