如何使用C＃中的用户输入来计算正方形的曲面？

Question

我想编写一个程序，在该程序中，系统将要求用户提供用于计算正方形表面的数字。但是我不知道如何在我的方法中“使用”输入的数字。

谢谢

这是我到目前为止所做的

static void Main(string[] args)
{

    calculate();

}

public static void Height()
{
    Console.WriteLine("Enter height of the square");


   string enter1 = Console.ReadLine();


    double height = Convert.ToDouble(enter1);


    // height of the square 
}
public static void Length()
{
    Console.WriteLine("Enter length of the square");


    string enter2 = Console.ReadLine();


     double length = Convert.ToDouble(enter2);

    //length of the square 



}

static double calculate(double a, double b)

{


    double summary = a * b;

    Console.WriteLine(summary);
    return summary;



    }

}

Answer 1

返回并使用您首先输入的内容，以确保您获得成功：

static void Main(string[] args)
{

    calculate(Height(), Length());

}

public double void Height()
{
    Console.WriteLine("Enter height of the square");


   string enter1 = Console.ReadLine();


   return Convert.ToDouble(enter1);


    // height of the square 
}
public static double Length()
{
    Console.WriteLine("Enter length of the square");


    string enter2 = Console.ReadLine();


    return Convert.ToDouble(enter2);

    //length of the square 



}

static double calculate(double a, double b)

{


    double summary = a * b;

    Console.WriteLine(summary);
    return summary;



    }

}

如果我没有错别字，那么这应该对您有用，但是您仍有很多要学习的地方。您应该将I / O操作与计算的业务逻辑分开，并且为了可重用性和可移植性，两者之间应仅进行精简通信。我没有在上面的代码中这样做，它留给您作为家庭作业。

Answer 2

首先，我建议提取一种方法（读取double值：]

  public static double ReadDouble(string title) { 
    // while (true) - keep on asking until valid value provided
    while (true) {
      if (!string.IsNullOrEmpty(title))
        Console.WriteLine(title);

      // TryParse: user can enter any input here, say, "bla-bla-bla"
      // we don't want any exceptions here
      if (double.TryParse(Console.ReadLine(), out double result))
        return result;

      Console.WriteLine("Sorry, invalid syntax; please, try again");
    }  
  }

然后我们可以实现主例程：

static void Main(string[] args)
{
    double height = ReadDouble("Enter height of the rectangle");
    double width = ReadDouble("Enter width of the rectangle");
    double square = height * width;  

    Console.WriteLine($"The square of the {width} x {height} rectangle is {square}");

    // Pause (wait for a keypress) for user to read the answer
    Console.ReadKey();
}