[C++]Create derived data (using formulae)

[Surya Kiran Gullapalli]

Hello all,
Let's say I've a table containing 3 columns 'A', 'B', and 'C'. Is it
possible to create a 4th column 'D' using a formula (like (A+B)/C) ?

I know I can manually create them using compute functions, but is it
possible to parse a formula like the above and compute the column on the
fly at runtime ?

Any pointers are greatly appreciated.

Thanks,
Surya