What I need:

Create a new program named Reverse4 and declare four integer variables with the values 23, 45, 55, and 67.

Add a method named Reverse that reverses the positions of four integer variables. The Reverse method should accept the variables as references.

Write a Main() method that displays the four variables both before and after reversing them to ensure the method works correctly.

What I have:

using System; class Reverse4 {

public static void reverse(ref int num1, ref int num2, ref int num3, ref int num4) { int temp;

temp = num1; num1 = num4; num4 = temp;

temp = num2; num2 = num3; num3 = temp; }

public static void Main (string[] args) { int a = 23; int b = 45; int c = 55; int d = 67;

Console.WriteLine("Before swap"); Console.WriteLine(a + ", " + b + ", " + c + ", " + d);

/* calling a function to swap the values */ reverse(ref a, ref b, ref c, ref d);

Console.WriteLine("After swap"); Console.WriteLine(a + ", " + b + ", " + c + ", " + d); } }

Error I get:

Compilation failed: 1 error(s), 0 warnings NtTest444c819b.cs(13,16): error CS0117: `Reverse4' does not contain a definition for `Reverse' Reverse4.cs(2,7): (Location of the symbol related to previous error)