C# 长度计算器英尺和英寸

在我的if语句

（LengthCalculatorOption==1）

中，我想将187.96cm转换为英尺和英寸，例如6英尺2英寸。我该怎么做？在我当前的代码中，它显示为6.17英尺，始终为0英寸。我不知道为什么

static void Main(string[] args) {

    double Centimetres = 0.0, Feet = 0.0, Inches = 0.0;
    string AnotherConversion = null;
    string LengthCalculatorMenu;
    int LengthCalculatorOption;

    do {
        LengthCalculatorMenu = ("Enter 1) Convert centimetres to feet and inches:"
                           +  "\nEnter 2) Convert feet and inches to centimetres:");
        Console.Write(LengthCalculatorMenu);
        LengthCalculatorOption = int.Parse(Console.ReadLine());

        if (LengthCalculatorOption == 1) {
            Console.WriteLine("Please Enter the Centimetres(cm) that you wish to convert to feet and inches");
            Centimetres = double.Parse(Console.ReadLine());

            Feet = (Centimetres / 2.54) / 12;
            Inches = (Centimetres / 2.54) - (Feet * 12);
            Centimetres = ((Feet * 12) + Inches) * 2.54;
            Console.WriteLine("\nThe equivalent in feet and inches is {0:C} ft {1:G} ins", Feet, Inches);

            Console.Write("\nWould you like to make an another conversion? \n\n(Enter Y to make an another conversion/Enter any other key to exit):");
            AnotherConversion = Console.ReadLine();
        } else if (LengthCalculatorOption == 2) {
            Console.WriteLine("Please Enter the Feet");
            Feet = double.Parse(Console.ReadLine());
            Console.WriteLine("Please Enter the Inches");
            Inches = double.Parse(Console.ReadLine());

            Centimetres = ((Feet * 12) + Inches) * 2.54;
            Console.WriteLine("\nThe equivalent in centimetres is {0:G}cm", Centimetres);

            Console.Write("\nWould you like to make an another conversion? \n\n(Enter Y to make an another conversion/Enter any other key to exit):");
            AnotherConversion = Console.ReadLine();
        } else {
            Console.WriteLine("\n\a\t Invalid Option!Option Must be 1 or 2");
        }
    } while (AnotherConversion == "y" || AnotherConversion == "Y");

试试这个：

Feet = (Centimetres / 2.54) / 12;
int iFeet = (int)Feet;
inches = (Feet - (double)iFeet) * 12;

 double F = Math.Floor(Centimetres * 0.0328084);
 Feet = Centimetres * 0.0328084;
 Inches = (Feet - F) * 12;

详细说明一下：

您将英尺定义为双精度，这意味着它将是一个十进制值。既然你除以12，它就可以变成十进制

我的代码所做的是将英尺转换为整数（在这种情况下，它将四舍五入为6）。然后我们减去双版本的英尺（在这种情况下为6.17英尺），它等于.17英尺（余数）。我们把它乘以12，从.17英尺换算成英寸

编辑

根据斯科特的评论进行扩展，这将是一种不同的方式

int totalInches = (Centimetres / 2.54); // This will take a floor function of Centimetres/2.54
int Feet = (totalInches - totalInches % 12) / 12; // This will make it divisible by 12
int inches = totalInches % 12; // This will give you the remainder after you divide by 12

---

将其保持为双精度，使用：

double inp = 12.75; // e.g.

double feet = Math.Floor(inp);
double inches = (inp - feet) * 12.0;

试试这个：

Feet = (Centimetres / 2.54) / 12;
int iFeet = (int)Feet;
inches = (Feet - (double)iFeet) * 12;

 double F = Math.Floor(Centimetres * 0.0328084);
 Feet = Centimetres * 0.0328084;
 Inches = (Feet - F) * 12;

---

1英尺=0.30480m

要计算厘米到英尺和英寸的值，您可能需要执行以下操作：

double centimeters = 187.96;
double inches = centimeters/2.54;
double feet = Math.Floor(inches / 12);
inches -= (feet*12);

一般来说，一个人应该向下转换到最基本的水平，然后计算你的方式向上。这样，您只需进行一次转换，而不必重复转换计算。在这个例子中，我做了厘米到英寸的简单转换，然后，以英寸为单位计算英尺数，然后从最终的英寸值中减去这么多

---

所以，如果我有，比如说，38英寸，我会有

Math.Floor（38/12）

英尺，或者3英尺。然后将

inches

设置为

38-（3*12）

，即2，最终结果为3英尺2英寸。

一些通用方法：

public static class Converter
{
    public static (int Feet, double Inches) CentimetresToFeetInches(double centimetres)
    {
        var feet = centimetres / 2.54 / 12;
        var iFeet = (int)feet;
        var inches = (feet - iFeet) * 12;

        return (iFeet, inches);
    }

    public static string CentimetresToFeetInchesString(double centimetres, string footSymbol = " foot", string inchesSymbol = " inches")
    {
        (var feet, var inches) = CentimetresToFeetInches(centimetres);
        return $"{feet:N0}{footSymbol}, {inches:N0}{inchesSymbol}";
    }
}

用法：

(var feet, var inches) = Converter.CentimetresToFeetInches(178);
//feet == 5
//inches == 10.078740157480315

var feetInchesString = Converter.CentimetresToFeetInchesString(178);
//5 foot, 10 inches

---

就我个人而言，我更喜欢

Math.Floor

而不是自己使用隐式整数trunctation。而且我不喜欢到处都是演员。另外，我觉得自上而下（英尺到英寸）而不是相反的方式会导致精度/价值的潜在损失，尽管我很可能在最后一点上错了@斯科特：你可能在舍入误差方面是对的，修改后的答案可能会起作用，因为你的编辑会产生错误的英尺数。如果totalInches是14，那么（14-（14%12））=14-2=12。@Scott Good catch:）忘了将其除以12，再次修复了它