static void Main(string[] args)
{
Console.WriteLine("请输入你要进行运算的长度格式(请不要输错格式)如：1英尺9英寸");
Console.WriteLine("\n第一个英制长度b1：");
BLength B1 = Console.ReadLine();
Console.WriteLine("\n第二个英制长度b2：");
BLength B2 = Console.ReadLine();
BLength B3 = B1 + B2;
Console.WriteLine("\n进行加法运算：b1 + b2");
Console.WriteLine("{0}英尺{1}英寸 + {2}英尺{3}英寸 = {4}英尺{5}英寸", B1.feet, B1.inches, B2.feet, B2.inches, B3.feet, B3.inches);
BLength B4 = B1 - B2;
Console.WriteLine("\n进行减法运算：b1 - b2");
if (B4.inches >= 0)
{
Console.WriteLine("{0}英尺{1}英寸 - {2}英尺{3}英寸 = {4}英尺{5}英寸", B1.feet, B1.inches, B2.feet, B2.inches, B4.feet, B4.inches);
}
else
{
Console.WriteLine("{0}英尺{1}英寸 - {2}英尺{3}英寸 = - {4}英尺{5}英寸", B1.feet, B1.inches, B2.feet, B2.inches, B4.feet, -B4.inches);
}
Console.ReadLine();
}
public static BLength operator -(BLength b3, BLength b4)//减法运算
{
BLength b5 = new BLength();
b5.feet = b3.feet - b4.feet;
b5.inches = b3.inches - b4.inches;
return(b5);
}
public static BLength operator +(BLength b, BLength b1)//加法运算
{
BLength b2 = new BLength();
b2.feet = b1.feet + b.feet;
b2.inches = b1.inches + b.inches;
if (b2.inches >= 12)
{
b2.feet = b2.feet + ((int)b2.inches) / 12;
b2.inches = b2.inches % 12;
}
return(b2);
}
