C#计算器怎么做

hu88312976 2010-01-09 02:04:20
int count = 1;
int result = 0;
List<int> al = new List<int>();

private void bujia_Click(object sender, EventArgs e)
{

al.Add(int.Parse(this.xianshi.Text));
this.xianshi.Text = null;
if (count % 2 == 0)
{

foreach (int num in al)
{
result += num;

}
this.xianshi.Text = result.ToString();

}

count++;
}
那个地方有问题啊，累加的时候出错了
...全文
1744 28 打赏 收藏 转发到动态 举报
写回复
用AI写文章
28 条回复
切换为时间正序
请发表友善的回复…
发表回复
cena_jin 2011-09-05
  • 打赏
  • 举报
 回复
小菜也是学习的~！
暗恋天堂 2010-03-15
  • 打赏
  • 举报
 回复
学习了
huangyong0625 2010-03-15
  • 打赏
  • 举报
 回复
67u865yu6e5rtyhrsthgtregestgergfregesrgesr
fatpig_007 2010-01-10
  • 打赏
  • 举报
 回复
学习了
蓝生魂 2010-01-10
  • 打赏
  • 举报
 回复
12楼楼主用了继承，简单加工工厂模式，希望楼主能够知道这些是什么
[Quote=引用 12 楼 wuyq11 的回复:]
public class Operation
    {
        private double _numberA = 0;
        private double _numberB = 0;
        public double NumberA
        {
            get
            {
                return _numberA;
            }
            set
            {
                _numberA = value;
            }
        }
        public double NumberB
        {
            get
            {
                return _numberB;
            }
            set
            {
                _numberB = value;
            }
        }
        public virtual double GetResult()
        {
            double result = 0;
            return result;
        }
        public static string checkNumberInput(string currentNumber, string inputString)
        {
            string result = "";
            if (inputString == ".")
            {
                if (currentNumber.IndexOf(".") < 0)
                {
                    if (currentNumber.Length == 0)
                        result = "0" + inputString;
                    else
                        result = currentNumber + inputString;
                }
            }
            else if (currentNumber == "0")
            {
                result = inputString;
            }
            else
            {
                result = currentNumber + inputString;
            }

            return result;
        }


    }
    class OperationAdd : Operation
    {
        public override double GetResult()
        {
            double result = 0;
            result = NumberA + NumberB;
            return result;
        }
    }
    class OperationSub : Operation
    {
        public override double GetResult()
        {
            double result = 0;
            result = NumberA - NumberB;
            return result;
        }
    }
    class OperationMul : Operation
    {
        public override double GetResult()
        {
            double result = 0;
            result = NumberA * NumberB;
            return result;
        }
    }
    class OperationDiv : Operation
    {
        public override double GetResult()
        {
            double result = 0;
            if (NumberB == 0)
                throw new Exception("除数不能为0。");
            result = NumberA / NumberB;
            return result;
        }
    }
    class OperationSqr : Operation
    {
        public override double GetResult()
        {
            double result = 0;
            result = NumberB * NumberB;
            return result;
        }
    }
    class OperationSqrt : Operation
    {
        public override double GetResult()
        {
            double result = 0;
            if (NumberB < 0)
                throw new Exception("负数不能开平方根。");
            result = Math.Sqrt(NumberB);
            return result;
        }
    }
    class OperationReverse : Operation
    {
        public override double GetResult()
        {
            double result = 0;
            result = -NumberB;
            return result;
        }
    }
public class OperationFactory
{
    public static Operation createOperate(string operate)
    {
        Operation oper = null;
        switch (operate)
        {
            case "+":
                {
                    oper = new OperationAdd();
                    break;
                }
            case "-":
                {
                    oper = new OperationSub();
                    break;
                }
            case "*":
                {
                    oper = new OperationMul();
                    break;
                }
            case "/":
                {
                    oper = new OperationDiv();
                    break;
                }
            case "sqr":
                {
                    oper = new OperationSqr();
                    break;
                }
            case "sqrt":
                {
                    oper = new OperationSqrt();
                    break;
                }
            case "+/-":
                {
                    oper = new OperationReverse();
                    break;
                }
        }

        return oper;
    }


  private void buttonAdd_Click(object sender, EventArgs e)
        {
            if (txtShow.Text != "")
            {
                oper = OperationFactory.createOperate(((Button)sender).Text);
               
                oper.NumberA = Convert.ToDouble(txtShow.Text);
               
                bOperate = true;
            }
        }
private void buttonEqual_Click(object sender, EventArgs e)
        {
            if (txtShow.Text != "")
            {
                if (((Button)sender).Text != "=")
                {
                    oper = OperationFactory.createOperate(((Button)sender).Text);
                }
                oper.NumberB = Convert.ToDouble(txtShow.Text);
                txtShow.Text = oper.GetResult().ToString();
                bOperate = true;
            }
        }
http://topic.csdn.net/u/20100107/21/65aa1e7f-3298-4499-84bf-3bc907c905f5.html
[/Quote]
yumenlong5149 2010-01-10
  • 打赏
  • 举报
 回复
对一个计算器都不会写的运用工厂模式，设计模式也需要看看了...
summeryangyan 2010-01-09
  • 打赏
  • 举报
 回复
up~~
qingyun27sc 2010-01-09
  • 打赏
  • 举报
 回复


这种是不是也叫月经贴 ??? (*^__^*) 嘻嘻……
tyy283 2010-01-09
  • 打赏
  • 举报
 回复
楼主学过编程没？
Allen_zdh 2010-01-09
  • 打赏
  • 举报
 回复
OK！
Allen_zdh 2010-01-09
  • 打赏
  • 举报
 回复
详细一点啊 怎么 看不懂啊哥们
zhang_jun_long 2010-01-09
  • 打赏
  • 举报
 回复
#12楼 得分：0回复于：2010-01-09 19:02:19public class Operation
{
private double _numberA = 0;
private double _numberB = 0;
public double NumberA
{
get
{
return _numberA;
}
set
{
_numberA = value;
}
}
public double NumberB
{
get
{
return _numberB;
}
set
{
_numberB = value;
}
}
public virtual double GetResult()
{
double result = 0;
return result;
}
public static string checkNumberInput(string currentNumber, string inputString)
{
string result = "";
if (inputString == ".")
{
if (currentNumber.IndexOf(".") < 0)
{
if (currentNumber.Length == 0)
result = "0" + inputString;
else
result = currentNumber + inputString;
}
}
else if (currentNumber == "0")
{
result = inputString;
}
else
{
result = currentNumber + inputString;
}

return result;
}


}
class OperationAdd : Operation
{
public override double GetResult()
{
double result = 0;
result = NumberA + NumberB;
return result;
}
}
class OperationSub : Operation
{
public override double GetResult()
{
double result = 0;
result = NumberA - NumberB;
return result;
}
}
class OperationMul : Operation
{
public override double GetResult()
{
double result = 0;
result = NumberA * NumberB;
return result;
}
}
class OperationDiv : Operation
{
public override double GetResult()
{
double result = 0;
if (NumberB == 0)
throw new Exception("除数不能为0。");
result = NumberA / NumberB;
return result;
}
}
class OperationSqr : Operation
{
public override double GetResult()
{
double result = 0;
result = NumberB * NumberB;
return result;
}
}
class OperationSqrt : Operation
{
public override double GetResult()
{
double result = 0;
if (NumberB < 0)
throw new Exception("负数不能开平方根。");
result = Math.Sqrt(NumberB);
return result;
}
}
class OperationReverse : Operation
{
public override double GetResult()
{
double result = 0;
result = -NumberB;
return result;
}
}
public class OperationFactory
{
public static Operation createOperate(string operate)
{
Operation oper = null;
switch (operate)
{
case "+":
{
oper = new OperationAdd();
break;
}
case "-":
{
oper = new OperationSub();
break;
}
case "*":
{
oper = new OperationMul();
break;
}
case "/":
{
oper = new OperationDiv();
break;
}
case "sqr":
{
oper = new OperationSqr();
break;
}
case "sqrt":
{
oper = new OperationSqrt();
break;
}
case "+/-":
{
oper = new OperationReverse();
break;
}
}

return oper;
}


private void buttonAdd_Click(object sender, EventArgs e)
{
if (txtShow.Text != "")
{
oper = OperationFactory.createOperate(((Button)sender).Text);

oper.NumberA = Convert.ToDouble(txtShow.Text);

bOperate = true;
}
}
private void buttonEqual_Click(object sender, EventArgs e)
{
if (txtShow.Text != "")
{
if (((Button)sender).Text != "=")
{
oper = OperationFactory.createOperate(((Button)sender).Text);
}
oper.NumberB = Convert.ToDouble(txtShow.Text);
txtShow.Text = oper.GetResult().ToString();
bOperate = true;
}
}

退一步海阔天空l忍一时风平浪静 2010-01-09
  • 打赏
  • 举报
 回复
加我qq376106751
alicelijing1 2010-01-09
  • 打赏
  • 举报
 回复
我来把楼上的注释加一下：
public class Operation
{
private double _numberA = 0; //输入的第一个数
private double _numberB = 0; //输入的第二个数
public double NumberA
{
get
{
return _numberA;
}
set
{
_numberA = value;
}
}
public double NumberB
{
get
{
return _numberB;
}
set
{
_numberB = value;
}
}
public virtual double GetResult() //返回计算结果
{
double result = 0;
return result;
}
public static string checkNumberInput(string currentNumber, string inputString) //判断输入的数是否有小数点
{
string result = "";
if (inputString == ".")
{
if (currentNumber.IndexOf(".") < 0)
{
if (currentNumber.Length == 0)
result = "0" + inputString;
else
result = currentNumber + inputString;
}
}
else if (currentNumber == "0")
{
result = inputString;
}
else
{
result = currentNumber + inputString;
}

return result;
}


}
class OperationAdd : Operation //加法子类
{
public override double GetResult()
{
double result = 0;
result = NumberA + NumberB;
return result;
}
}
class OperationSub : Operation //减法子类
{
public override double GetResult()
{
double result = 0;
result = NumberA - NumberB;
return result;
}
}
class OperationMul : Operation //乘法子类
{
public override double GetResult()
{
double result = 0;
result = NumberA * NumberB;
return result;
}
}
class OperationDiv : Operation //除法子类
{
public override double GetResult()
{
double result = 0;
if (NumberB == 0) //当除数为0的时候将抛出异常
throw new Exception("除数不能为0。");
result = NumberA / NumberB;
return result;
}
}
class OperationSqr : Operation //自身的平方子类
{
public override double GetResult()
{
double result = 0;
result = NumberB * NumberB;
return result;
}
}
class OperationSqrt : Operation //平方根
{
public override double GetResult()
{
double result = 0;
if (NumberB < 0)
throw new Exception("负数不能开平方根。");
result = Math.Sqrt(NumberB);
return result;
}
}
class OperationReverse : Operation //取反
{
public override double GetResult()
{
double result = 0;
result = -NumberB;
return result;
}
}
public class OperationFactory //计算器工厂类
{
public static Operation createOperate(string operate) //根据输入的运算符判断创建类型
{
Operation oper = null;
switch (operate)
{
case "+":
{
oper = new OperationAdd();
break;
}
case "-":
{
oper = new OperationSub();
break;
}
case "*":
{
oper = new OperationMul();
break;
}
case "/":
{
oper = new OperationDiv();
break;
}
case "sqr":
{
oper = new OperationSqr();
break;
}
case "sqrt":
{
oper = new OperationSqrt();
break;
}
case "+/-":
{
oper = new OperationReverse();
break;
}
}

return oper;
}


private void buttonAdd_Click(object sender, EventArgs e) //加号单击事件
{
if (txtShow.Text != "")
{
oper = OperationFactory.createOperate(((Button)sender).Text);

oper.NumberA = Convert.ToDouble(txtShow.Text);

bOperate = true;
}
}
private void buttonEqual_Click(object sender, EventArgs e) //等号单击事件
{
if (txtShow.Text != "")
{
if (((Button)sender).Text != "=")
{
oper = OperationFactory.createOperate(((Button)sender).Text);
}
oper.NumberB = Convert.ToDouble(txtShow.Text);
txtShow.Text = oper.GetResult().ToString();
bOperate = true;
}
}
wupeng34 2010-01-09
  • 打赏
  • 举报
 回复
能不能加上注释啊，不能理解你想做什么
assky124 2010-01-09
  • 打赏
  • 举报
 回复
大话设计模式
里有个计算器的例子，自己去看看吧.
wuyq11 2010-01-09
  • 打赏
  • 举报
 回复
public class Operation
{
private double _numberA = 0;
private double _numberB = 0;
public double NumberA
{
get
{
return _numberA;
}
set
{
_numberA = value;
}
}
public double NumberB
{
get
{
return _numberB;
}
set
{
_numberB = value;
}
}
public virtual double GetResult()
{
double result = 0;
return result;
}
public static string checkNumberInput(string currentNumber, string inputString)
{
string result = "";
if (inputString == ".")
{
if (currentNumber.IndexOf(".") < 0)
{
if (currentNumber.Length == 0)
result = "0" + inputString;
else
result = currentNumber + inputString;
}
}
else if (currentNumber == "0")
{
result = inputString;
}
else
{
result = currentNumber + inputString;
}

return result;
}


}
class OperationAdd : Operation
{
public override double GetResult()
{
double result = 0;
result = NumberA + NumberB;
return result;
}
}
class OperationSub : Operation
{
public override double GetResult()
{
double result = 0;
result = NumberA - NumberB;
return result;
}
}
class OperationMul : Operation
{
public override double GetResult()
{
double result = 0;
result = NumberA * NumberB;
return result;
}
}
class OperationDiv : Operation
{
public override double GetResult()
{
double result = 0;
if (NumberB == 0)
throw new Exception("除数不能为0。");
result = NumberA / NumberB;
return result;
}
}
class OperationSqr : Operation
{
public override double GetResult()
{
double result = 0;
result = NumberB * NumberB;
return result;
}
}
class OperationSqrt : Operation
{
public override double GetResult()
{
double result = 0;
if (NumberB < 0)
throw new Exception("负数不能开平方根。");
result = Math.Sqrt(NumberB);
return result;
}
}
class OperationReverse : Operation
{
public override double GetResult()
{
double result = 0;
result = -NumberB;
return result;
}
}
public class OperationFactory
{
public static Operation createOperate(string operate)
{
Operation oper = null;
switch (operate)
{
case "+":
{
oper = new OperationAdd();
break;
}
case "-":
{
oper = new OperationSub();
break;
}
case "*":
{
oper = new OperationMul();
break;
}
case "/":
{
oper = new OperationDiv();
break;
}
case "sqr":
{
oper = new OperationSqr();
break;
}
case "sqrt":
{
oper = new OperationSqrt();
break;
}
case "+/-":
{
oper = new OperationReverse();
break;
}
}

return oper;
}


private void buttonAdd_Click(object sender, EventArgs e)
{
if (txtShow.Text != "")
{
oper = OperationFactory.createOperate(((Button)sender).Text);

oper.NumberA = Convert.ToDouble(txtShow.Text);

bOperate = true;
}
}
private void buttonEqual_Click(object sender, EventArgs e)
{
if (txtShow.Text != "")
{
if (((Button)sender).Text != "=")
{
oper = OperationFactory.createOperate(((Button)sender).Text);
}
oper.NumberB = Convert.ToDouble(txtShow.Text);
txtShow.Text = oper.GetResult().ToString();
bOperate = true;
}
}
http://topic.csdn.net/u/20100107/21/65aa1e7f-3298-4499-84bf-3bc907c905f5.html
yangxxxxxx66 2010-01-09
  • 打赏
  • 举报
 回复
csdn下载里面应该有很多
hu88312976 2010-01-09
  • 打赏
  • 举报
 回复
什么意思啊？
ProjectDD 2010-01-09
  • 打赏
  • 举报
 回复
[Quote=引用楼主 hu88312976 的回复:]
int count = 1;
        int result = 0;
        List <int> al = new List <int>();
     
        private void bujia_Click(object sender, EventArgs e)
        {
            al.Add(int.Parse(this.xianshi.Text));
}
加载更多回复（7）
C#做的计算器C#做的计算器C#做的计算器
C#做的计算器C#做的计算器C#做的计算器C#做的计算器C#做的计算器C#做的计算器C#做的计算器C#做的计算器C#做的计算器
C# 计算器C做的计算器
C# 计算器C# 计算器C# 计算器C# 计算器C# 计算器
C#Winform自带的RDLC报表实例教程
以实例讲解C#Winform自带的RDLC报表的基本设置，格式化，排序与分组，常用报表控件的使用，子报表、主从报表、钻取报表的设计方法等
C#计算器 微软计算器
本人是用if做出来的C#计算器，功能和微软一样的。呵呵～～希望大家喜欢！！！只有168K 补充：在网上大家找的都是用Bool型做的计算器，用if做得少，嘿嘿嘿～～～
C# 计算器程序源码
自己用c#做的计算器，将数据、方法和界面分离~
C#

110,535

社区成员

642,577

社区内容

发帖
与我相关
我的任务
社区描述
.NET技术 C#
社区管理员
  • C#
  • Web++
  • by_封爱
加入社区
  • 近7日
  • 近30日
  • 至今

加载中

查看更多榜单
社区公告

让您成为最强悍的C#开发者

试试用AI创作助手写篇文章吧

+ 用AI写文章