- Operator (C# Reference)
The - operator can function as either a unary or a binary operator.
Remarks
Unary - operators are predefined for all numeric types. The result of a unary - operation on a numeric type is the numeric negation of the operand.
Binary - operators are predefined for all numeric and enumeration types to subtract the second operand from the first.
Delegate types also provide a binary - operator, which performs delegate removal.
User-defined types can overload the unary - and binary - operators. For more information, see operator.
Example
// cs_operator_minus.cs
using System;
class MainClass
{
static void Main()
{
int a = 5;
Console.WriteLine(-a);
Console.WriteLine(a - 1);
Console.WriteLine(a - .5);
}
}
Output
-5 4 4.5
C# Language Specification
For more information, see the following sections in the C# Language Specification:
1.6.6.5 Operators
7.2 Operators