Answer Posted / murthy.y.n

Actually I am not a master in C programming. With my little knowledge and common sense I try to give my view.
The basic dictionary meaning of "void" is nothing or space or empty.For example if two objects are separated by a small distance without any thing between them we, say the space between the two objects is void.

In computer program, we write a function to perform some action.After performing it should give the result (return the value).Some times the act or function may not calculate any thing and may not give any result.
For example ,you want to read some data ,or print hello world etc..

Then you can use the function as void.
Suppose after execution a function gives the sum as an integer we can write int main or float main etc..
so the result given by (return) a function is a float or integer or any such things..

I think I am able to explain in a simple way .If any errors ,please correct me

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