47565 Simple C++ Program

It's an urgent project. Need it within 24 hours. Description: A program coded in VC6. It's a commandline program: I would like a class that accepts a number of (X,Y) integer pairs and then: 1. Is able to provide the Y value given the X. 2. Is able to determine when X reaches a specific Y value. 3. Is able to save / restore the values it has determined for later reuse. Don't bid over budget.