I have an issue I am not sure how to handle. I am trying to call a function from within another function but I get the following warning "2129 [Warning] implicit declaration of function "
I have defined prototypes for all my functions at the very start of main, and privided funtion definitions outside of main at the end. These are all user-defined functions. Does anyone know why I am getting these warnings?

You need to post the code you wrote. Just telling us is next to useless. Also tell us what compiler and operating system you are using. As a rule-of-thum you need to check spelling and capitalization very carefully. Foo() is not the same as foo().