Variable parameters (Varargs) in C#

Use the param keyword in C# to get variable parameters.

Let’s look at an example of multiplying integers. We use the params keyword to accept any number of int values ​​-

static int Multiply(params int[] b)

The above code allows us to find the numerical multiplication of one or two int values. The following calls the same function with multiple values ​​-

int mulVal1 = Multiply(5);
int mulVal2 = Multiply(5, 10);

Let’s see the complete code to understand how variable parameters work in C# -

Example

using System;

class Program {
   static void Main() {
      int mulVal1 = Multiply(5);
      int mulVal2 = Multiply(5, 10);

      Console.WriteLine(mulVal1);
      Console.WriteLine(mulVal2);
   }

   static int Multiply(params int[] b) {
      int mul =1;
      foreach (int a in b) {
         mul = mul*a;
      }
      return mul;
   }
}

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