public static AddClass1 operator -(AddClass1 op1, AddClass1 op2) { AddClass1 obj = new AddClass1(); obj.val = op1.val * op2.val; return(obj); }
static void Main(string[] args) { AddClass1 op1 = new AddClass1(); op1.val = 3; AddClass1 op2 = new AddClass1(); op2.val = 2; AddClass1 op3 = op1 - op2; Console.WriteLine("op1+op2 = {0}", op3.val); }