#include <iostream>
#include "uCalc.h"

using namespace std;
using namespace uCalcSoftware;

int main() {
   uCalc uc;
   // Define variables representing configuration or user inputs.
   uc.DefineVariable("principal = 20000");
   uc.DefineVariable("annual_rate = 0.0575");
   uc.DefineVariable("years = 4");

   // Evaluate an expression combining these variables.
   auto interest = uc.Eval("principal * annual_rate * years");
   cout << "Total Interest: " << interest << endl;
}