using uCalcSoftware;

var uc = new uCalc();
var MyVar1 = uc.DefineVariable("MyVar1 = 123.456");
var MyVar2 = uc.DefineVariable("MyVar2 = 654.321");
var MyStr1 = uc.DefineVariable("MyStr1 = 'First string'");
var MyStr2 = uc.DefineVariable("MyStr2 = 'Second string'");

uc.DataTypeOf("double").SetScalar(MyVar1.ValueAddr(), MyVar2.ValueAddr());
uc.DataTypeOf("string").SetScalar(MyStr1.ValueAddr(), MyStr2.ValueAddr());

Console.WriteLine(uc.EvalStr("MyVar1")); // Now contains value copied from MyVar2
Console.WriteLine(uc.EvalStr("MyStr1")); // Now contains value copied from MyStr2