控制台计算器（类，枚举，继承）

来源：互联网发布：淘宝不清洗订单会怎样编辑：程序博客网时间：2024/06/02 16:24

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Calculator
{
public class Calculate:IPrint
{
int result = 0;
public int FirstValue { get; set; }
public int SecondValue { get; set; }
bool flag = false;
public void Operate(Operand operand)
{
switch (operand)
{
case Operand.Addition:
result = FirstValue + SecondValue;
break;
case Operand.Subtraction:
result = FirstValue - SecondValue;
break;
case Operand.Multiplication:
result = FirstValue * SecondValue;
break;
case Operand.Division:
result = FirstValue / SecondValue;
flag = true;
break;
default:
break;
}
}

#region IPrint 成员

public void Print()
{
if (flag && FirstValue % SecondValue!=0)
{
Console.WriteLine("结果为" + FirstValue + "/" + SecondValue);
flag = false;
}
else
{
Console.WriteLine("结果为：{0}", result);
}

}

#endregion
}

}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Calculator
{
public interface IPrint
{
void Print();
}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Calculator
{
public class Menu:IPrint
{
string choice = string.Empty;
string inputValue = string.Empty;
string inputValue1 = string.Empty;
bool flag = false;
#region IPrint 成员
ValidationMenu validationMenu = new ValidationMenu();
ValidationByZero validationByZero = new ValidationByZero();
ValidationInputFormat validationInputFormat = new ValidationInputFormat();
public void Print()
{
do
{
Console.WriteLine("+-------------------------------------------+");
Console.WriteLine("|-加法计算选择 1 减法计算选择2 -|");
Console.WriteLine("|-乘法计算选择 3 除法计算选择4 -|");
Console.WriteLine("|-退出选择 0 -|");
Console.WriteLine("+-------------------------------------------+");
Console.WriteLine("请输入要选择的项： ");
choice = Console.ReadLine();

flag=validationMenu.Check(choice);
if (choice != "0" && flag)
{
Calculate calculate = new Calculate();
Console.WriteLine("请输入第一个数");
inputValue =Console.ReadLine();

if (!validationInputFormat.Check(inputValue))
{
validationInputFormat.Print();
}
else
{
Console.WriteLine("请输入第二个数");
inputValue1 = Console.ReadLine();
if (!validationInputFormat.Check(inputValue1))
{
validationInputFormat.Print();
}
else
{
calculate.FirstValue = int.Parse(inputValue);
calculate.SecondValue = int.Parse(inputValue1);

//second Value
switch (choice)
{
case "1":
calculate.Operate(Operand.Addition);
calculate.Print();
break;
case "2":
calculate.Operate(Operand.Subtraction);
calculate.Print();
break;
case "3":
calculate.Operate(Operand.Multiplication);
calculate.Print();
break;
case "4":
if (!validationByZero.Check(calculate.SecondValue))
{


break;
}
else{
calculate.Operate(Operand.Division);
calculate.Print();
break;
};
default:
break;
}
}
}
}
else if (choice == "0")
{
Console.WriteLine("你是否要真的退出？Y/N");
string a = Console.ReadLine();
if(a=="Y")
break; ;
}

} while (true);


}

#endregion
}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Calculator
{
public enum Operand
{
Addition=1,
Subtraction=2,
Multiplication=3,
Division=4
}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Calculator
{
class Program
{
static void Main(string[] args)
{
Menu menu = new Menu();
menu.Print();

}
}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Calculator
{
public abstract class Validation
{
//验证输入
public abstract bool Check(object value);
}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Calculator
{
public class ValidationByZero:Validation,IPrint
{
public override bool Check(object value)
{
Int32 num = Convert.ToInt32(value);
if (num == 0)
{
Print();
return false;
}
else
{
return true;
}

}

#region IPrint 成员

public void Print()
{
Console.WriteLine("除数为0不能做除法");
}

#endregion
}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Calculator
{
public class ValidationMenu : Validation, IPrint
{
public override bool Check(object value)
{
string value2 = Convert.ToString(value);
Int32 value1 = 0;
//TODO: 检查用户输入是否正确
System.Text.RegularExpressions.Regex rex =
new System.Text.RegularExpressions.Regex(@"^[0-9]*$");
if (!rex.IsMatch(value2))
{
Print();
return false;
}
else
{
value1 = Convert.ToInt32(value);
}
if (value1 != Convert.ToInt32(Operand.Addition) && value1 != Convert.ToInt32(Operand.Subtraction) && value1 != Convert.ToInt32(Operand.Multiplication) && value1 != Convert.ToInt32(Operand.Division) && value1 != 0)
{
Print();

return false;

}
else
{
return true;
}

}

#region IPrint 成员

public void Print()
{
Console.WriteLine("菜单选择项录入的不合法合法，请重新操作");
}

#endregion
}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Calculator
{
public class ValidationInputFormat : Validation, IPrint
{
public override bool Check(object value)
{
string value1 = Convert.ToString(value);
//TODO: 检查用户输入是否正确
System.Text.RegularExpressions.Regex rex =
new System.Text.RegularExpressions.Regex(@"^[0-9]*$");
if (rex.IsMatch(value1))
{

return true;
}
else
return false;
}

#region IPrint 成员

public void Print()
{
Console.WriteLine("您输入的格式不正确！");
}

#endregion
}
}

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