Question

感谢Queston的回答：）

我在一个类中创建了一个包含多个方法的代码，但是当我尝试运行它时，它说

预期的类，委托，枚举，接口或结构

关于两种不是主要方法的方法。我读了一遍，发现有人有同样的问题，案例是这些方法不在课堂上。但无法弄清楚如何解决这个问题。有小费吗？

PS：我对编码很新;）

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Answer 1

工作版：

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      <ion-list>
        <ion-item ng-class="{red : somearray.indexOf($index) > -1}" ng-repeat="todo in todos" class="item" >
              <div>
                <button class="button button-block button-dark" ng-click="addNewForm($index)">
                  {{todo.title}}
                </button>
                {{$index}}
              </div>
        </ion-item>
      </ion-list>
</div>

调用不使用public static void Main(string[] args) { string answer; Console.WriteLine("Would you like to divide or multiply? Type your choice."); while (true) { answer = (Console.ReadLine()); if (answer == "multiply") { MultiplyingMethod(); break; } else if (answer == "divide") { DividingMethod(); break; } else { Console.WriteLine("Please type multiply or divide."); } } } public static void DividingMethod() { Console.Write("Enter a number to be divided"); double num01 = Convert.ToInt32(Console.ReadLine()); Console.Write("Enter a number to divide by"); double num02 = Convert.ToInt32(Console.ReadLine()); Console.WriteLine(num01 + " divided by " + num02 + " is equal to " + num01/num02); Console.WriteLine(""); Console.ReadKey(); } public static void MultiplyingMethod() { double num01; double num02; Console.Write("Enter a number to be multiplied"); num01 = Convert.ToInt32(Console.ReadLine()); Console.Write("Enter a numeber to multiply by"); num02 = Convert.ToInt32(Console.ReadLine()); Console.WriteLine(num01 + " multiplied by " + num02 + " equals " + num01*num02); Console.WriteLine(""); Console.ReadKey(); }等参数而非MultiplyingMethod();的方法。那是没有效的C＃
请不要使用MultiplyingMethod;。它会使你的代码变得混乱。看看loops

Answer 2

您应该使用（）调用方法。

Write MultiplyingMethod（）;而不是MultiplyingMethod（）;和 DividingMethod（）;而不是DividingMethod;

 public static void Main(string[] args)
        {
            string answer;

            Console.WriteLine("Would you like to divide or multiply? Type your choice.");

        Start:
            answer = (Console.ReadLine());

            if (answer == "multiply")
            {
                MultiplyingMethod();
            }
            else if (answer == "divide")
            {
                DividingMethod();
            }
            else
            {

                Console.WriteLine("Please type multiply or divide.");

                goto Start;
            }

        }
        public static void DividingMethod()
        {
            double num01;
            double num02;

            Console.Write("Enter a number to be divided");
            num01 = Convert.ToInt32(Console.ReadLine());
            Console.Write("Enter a number to divide by");
            num02 = Convert.ToInt32(Console.ReadLine());

            Console.WriteLine(num01 + " divided by " + num02 + " is equal to " + num01 / num02);

            Console.WriteLine("");
            Console.ReadKey();

        }
        public static void MultiplyingMethod()
        {
            double num01;
            double num02;

            Console.Write("Enter a number to be multiplied");
            num01 = Convert.ToInt32(Console.ReadLine());
            Console.Write("Enter a numeber to multiply by");
            num02 = Convert.ToInt32(Console.ReadLine());

            Console.WriteLine(num01 + " multiplied by " + num02 + " equals " + num01 * num02);

            Console.WriteLine("");
            Console.ReadKey();

        }

另外，永远不要使用goto，这不好！

Answer 3

此代码存在以下几个问题：

应使用以下语法调用函数：funcname（params）。因此DividingMethod;变为DividingMethod();
尽量不要使用goto（听起来很简单，但却让你的代码很难阅读和调试）
括号太多

if（answer ==“multiply”） { MultiplyingMethod; } { 否则如果（回答==“除”） { DividingMethod; } }

应该是：

if (answer == "multiply") 
{
    MultiplyingMethod();
}
else if (answer == "divide")
{
    DividingMethod();
}

预期的类，委托，枚举，接口或结构

3 个答案: