static int IntCodeComputer(string code, int noun, int verb) { int[] intCode = code.Split(',', StringSplitOptions.RemoveEmptyEntries).Select(s => int.Parse(s)).ToArray(); intCode[1] = noun; intCode[2] = verb; bool stopRunning = false; for (int i = 0; i <= intCode.Length && stopRunning == false; i = i + 4) { switch (intCode[i]) { case 1: // Addition intCode = Opcode.Calculator("addition", intCode, i + 1, i + 2, i + 3); break; case 2: // Multiplication intCode = Opcode.Calculator("multiplication", intCode, i + 1, i + 2, i + 3); break; case 99: // Stop stopRunning = true; break; default: // Default Console.WriteLine("Default Case"); stopRunning = true; break; } } return(intCode[0]); }