CS0019 Operator cannot be applied to operands of type 'bool' and 'int'

This program is in response to the assignment: "Create a method named `Sum()` that accepts any number of integer parameters and displays their sum. Write a `Main()` method that demonstrates that the `Sum()` method works correctly when passed one, three, five, or an array of ten integers. Save the program as `UsingSum.cs`." from Microsoft® Visual C#® 2008, An Introduction to Object-Oriented Programming, 3e, Joyce Farrell My code in the "//step 1:" part is getting the CS0019 error, which states that it cannot be applied to operands of type `bool` and `int`. I highly suspect there are also other problems with this code, but it's a great improvement over what I had four hours ago… ``` using System; public class UsingSum { public static void Main() { Sum(); } public static void Sum() { // Step 1: Addition of one, three, five bool q, r, s; int firstTotal, n, o, p; string k, l, m; Console.Write("Type the number 1: "); k = Console.ReadLine(); n = Convert.ToInt32(k); q = Convert.ToBoolean(k); Console.WriteLine(); if (q == 1) Console.WriteLine("Input accepted."); else if (!(q == 1)) { Console.WriteLine("Error: You didn't type the number 1. Please try again."); Console.Write("Type the number 1: "); k = Console.ReadLine(); n = Convert.ToInt32(k); q = Convert.ToBoolean(k); } } Console.Write("Type the number 3: "); l = Console.ReadLine(); r = Convert.ToBoolean(l); o = Convert.ToInt32(l); Console.WriteLine(); if (r <= 2 || r >= 4) { Console.WriteLine("Error: You didn't type the number 3. Please try again."); Console.Write("Type the number 3: "); l = Console.ReadLine(); r = Convert.ToBoolean(l); o = Convert.ToInt32(l); } else if (r = 3) Console.WriteLine("Input accepted."); Console.Write("Type the number 5: "); m = Console.ReadLine(); p = Convert.ToInt32(m); s = Convert.ToBoolean(m); Console.WriteLine(); if (s <= 4 || s >= 6) { Console.WriteLine("Error: You didn't type the number 5. Please try again."); Console.Write("Type the number 5: "); m = Console.ReadLine(); p = Convert.ToInt32(m); s = Convert.ToBoolean(m); } else if (s = 5) Console.WriteLine("Input accepted."); firstTotal = n + o + p; Console.WriteLine("{0} + {1} + {2} = {3}", n, o, p, firstTotal); // Step 2: Entering integers for array[10] int a, arrayTotal, b, c, d, e, f, g, h, i, j, unlimited; Console.Write("Enter first integer for addition: "); a = Convert.ToInt32(Console.ReadLine()); Console.Write("Enter second integer for addition: "); b = Convert.ToInt32(Console.ReadLine()); Console.Write("Enter third integer for addition: "); c = Convert.ToInt32(Console.ReadLine()); Console.Write("Enter forth integer for addition: "); d = Convert.ToInt32(Console.ReadLine()); Console.Write("Enter fifth integer for addition: "); e = Convert.ToInt32(Console.ReadLine()); Console.Write("Enter sixth integer for addition: "); f = Convert.ToInt32(Console.ReadLine()); Console.Write("Enter seventh integer for addition: "); g = Convert.ToInt32(Console.ReadLine()); Console.Write("Enter eighth integer for addition: "); h = Convert.ToInt32(Console.ReadLine()); Console.Write("Enter ninth integer for addition: "); i = Convert.ToInt32(Console.ReadLine()); Console.Write("Enter tenth integer for addition: "); j = Convert.ToInt32(Console.ReadLine()); arrayTotal = a + b + c + d + e + f + g + h + i +j; Console.WriteLine("The total of {0} + {1} + {2} + {3} + {4} + {5} + {6} + {7} + {8} + {9} = {10}", a, b, c, d, e, f, g, h, i, j, arrayTotal); // Step 3: Unlimited array addition int[] arrayTwo; int total, y; string ADD, x; while(Console.Write("Enter an integer for addition, or type ADD to calculate the sum: ")) { x = Console.ReadLine(); y = Convert.ToInt32(x); if (x == ADD) Console.WriteLine("Calculating the total sum"); } for (y = 0; y < arrayTwo.Length; ++y) { total = arrayTwo[y] + arrayTwo[y]; ++arrayTwo[y]; Console.WriteLine("========================"); Console.WriteLine("=/n= The total is: {0} =/n=", total); Console.WriteLine("========================"); } } } ```