What's Next

I have shown you how C++ can be used as a sophisticated calculator with the UnderC interactive system. Arithmetic expressions are written using variables and constants, combined together with operators such as * and +. The main difference from a normal scientific calculator is that integer and real numbers are treated differently. You can also manipulate character strings and do input/output. Next, I will show you how to extend the calculator by writing your own functions and how to control the execution of statements with loops and decisions.