Thanks Salem.

I swapped the 'c' and 'v' around and will keep to that format from now on. I still do not understand why I am getting "unused" warnings about the parameters of the main function - maybe it's going to be part of the standard in C to have main written as

Code:
int main(void)
That's just a random guess, and I do understand what it means by the warnings it's just the one about the C standard totally threw me.

Ada x