public void Operators(int option, ref int val1,ref int val2 ) { MathOperations mt = new MathOperations(); switch(option) { case 1: { Console.WriteLine("The {0} is ... {1}",Operations.Addition, mt.Addition(ref val1, ref val2)); } break; case 2: { Console.WriteLine("The {0} is ... {1}",Operations.Subtraction, mt.Subtraction(ref val1, ref val2)); } break; case 3: { Console.WriteLine("The {0} is ... {1}",Operations.Multiplication, mt.Multiplication(ref val1, ref val2)); } break; case 4: { Console.WriteLine("The {0} is ... {1}",Operations.Division, mt.Division(ref val1, ref val2)); } break; case 5: { Console.WriteLine("the {0} is ...{1}", Operations.Exponentation, mt.Exponentation(ref val1, ref val2)); } break; case 6: { Console.Clear(); Console.WriteLine("....."); Matrix mx = new Matrix(); mx.MainMatrix(); } break; case 7: { LinearEquation le = new LinearEquation(); le.EquationSolver(); } break; default: Console.WriteLine("Wrong Choice"); break; } }