***C++***

I am writing a program that will allow the user to repackage their liquid product by calculating the size of the item in order to maintain the same volume. I continue to get the error "c++ forbids comparison between pointer and integer". I suspect I need to use the cctype library for the char arrays but am unsure how. What am I doing wrong?

#include #include #include using namespace std; int main ) / declare variables float ounces fluid: char repack method: char cube [5] char can [4] char ball [5]: cout