% Operator

The modulus operator (%) computes the remainder after dividing its first operand by its second. All numeric types have predefined modulus operators.

expr1 % expr2

Where:

expr1

An expression.

expr2

An expression.

Remarks

User-defined types can overload the % operator (see operator).

Example

// cs_operator_modulus.cs
using System;
class Test 
{
   public static void Main() 
   {
      Console.WriteLine(5 % 2);       // int
      Console.WriteLine(-5 % 2);      // int
      Console.WriteLine(5.0 % 2.2);   // double
      Console.WriteLine(5.0m % 2.2m); // decimal
      Console.WriteLine(-5.2 % 2.0);  // double
   }
}

Output

1
-1
0.6
0.6
-1.2

Note the round-off errors associated with the double type.

See Also

C# Operators | 7.7.3 Remainder operator