C # Operator Overloading

Requirements for operator overloading:

 

The reload instance is:

The classes to be overloaded are defined as follows:

 1 class LimitedInt 2     { 3         const int MaxValue = 100; 4         const int MinValue = 0; 5  6         public static LimitedInt operator -(LimitedInt x) 7         { 8             LimitedInt li = new LimitedInt(); 9             li.TheValue = -x.TheValue;10             return li;11         }12         public static LimitedInt operator -(LimitedInt x,double y)13         {14             LimitedInt li = new LimitedInt();15             li.TheValue = x.TheValue - (int)y;16             return li;17         }18 19         private int _TheValue = 0;20         public int TheValue21         {22             get 23             {24                 return _TheValue;25             }26             set27             {28                 _TheValue = value;29             }30         }31 }

It can be seen that the first overload operator is a single object operator, with a-sign

The second operator is A-number, but a binary operator.

In this case, you can make the following calls:

 1 class Program 2     { 3         static void Main(string[] args) 4         { 5             LimitedInt x = new LimitedInt(); 6             x.TheValue = 13; 7  8             double y = 7; 9 10             LimitedInt li = new LimitedInt();11 12             li =x-y;13 14             Console.WriteLine("{0}",li.TheValue);15 16             li = -x;17 18             Console.WriteLine("{0}",li.TheValue);19 20             Console.ReadKey();21         }22     }

The output is 6 and-13. The operation is correct.

C # Operator Overloading