What is this question asking for?-->Test this code, find an error in the program and "construct an instance to demonstrate the error" (in C) I am learning the basics of the language C, and so far we have covered up to loops. This question is related to my assignment. The problem is I do not understand what the question is asking.

I know the error in the code, but I don't understand what this question is asking me to do? What is an instance? Am I supposed to make a different piece of code? Because I am pretty sure the error is a semantic one(knowledge based rather than syntax). Here is the code anyways just for context:
As noted by Tom van der Zanden in a comment, and given you already know what's wrong with the code, think of an input that will cause the program to fail, just run the program with that input and you have your instance. Does it make more sense if you think of the phrase, "for instance"?

You may be overthinking it (a good sign actually), if this is just a very basic C language course, they are probably being rather obvious in what they are asking for.

KISS -- Keep It Simple, Sailor