Variable Arguments (Varargs) in C#

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

Let us see an example to multiply integers. We have used params keyword to accept any number of int values −

static int Multiply(params int[] b)

The above allows us to find multiplication of numbers with one as well as two int values. The fllowing calls the same function with multiple values −

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

Let us see the complete code to understand how variable arguments 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;    } }