Testing plays a very important role in the process of software development. Accuracy of the correctly functioning algorithm must be checked, regardless of the developing software process we use. In my thesis I wanted to upgrade or more precisely – to expand ALGator system, so that it would not only verify the accuracy of algorithms functionality written in JAVA programming language, but to also check the functionality of algorithms written in C++ programming language. Our approach is based on a already existing system – ALGator, but we would like to enable equal experience while working on ALGatorC - expanded version of the programme. We would also like to check the same parameters in C++ and JAVA programming languages, so we could be able to compare given results.