Dark Basic vs C++?

Well, im interested in becoming a videogame designer, so i'm taking courses at my school. So far i've worked with games factory (Don't think it helped me much but whatever), dark basic and flash. Dark Basic Pro is what i'm used to working with, but to check what skills are needed to this day most corperations require a knowledge of c++. My question is, is c++ significantly harder than dark basic? Or if im used to programming with this compiler, it'd be a relatively easy transition to c++.