Calculate计算类；
public abstract class Calculate //抽象类 Calculate
{
private double a;//第一个数
public double A//封装字段
{
get { return a; }
set { a = value; }
}
private double b;//第二个数字段封装
public double B
{
get { return b; }
set { b = value; }
}
public double result;
public virtual double Result()
{
return result;
}
}
public class Add : Calculate
{
public override double Result()
{
result = A + B;
return result;
}
}
public class Sub : Calculate
{
public override double Result()
{
result = A - B;
return result;
}
}
public class Mul : Calculate
{
public override double Result()
{
result = A * B;
return result;
}
}
public class Div : Calculate
{
public override double Result()
{
if (A == 0)
{
MessageBox.Show("分母不能为零");
}
result = A / B;
return result;
}
}
public class Mod : Calculate
{
public override double Result()
{
if (A == 0)
{
MessageBox.Show("分母不能为零");
}
result = A % B;
return result;
}
}
public class calculate
{
public static Calculate Cal(string type)
{
Calculate cal = null;
switch (type)
{
case "+":
cal = new Add(); //加法策略模式
break;
case "-":
cal = new Sub();
break;
case "*":
cal = new Mul();
break;
case "/":
cal = new Div();
break;
case "%":
cal = new Mod();
break;
default:
break;
}
return cal;
}
}
}Form1代码
private void txtresult_KeyDown(object sender, KeyEventArgs e)
{
Calculate cal=null;
string typ = typ1.Text.ToString();//调用类成员
cal = calculate.Cal(typ);
cal.A = Convert.ToDouble(txtone.Text);
cal.B= Convert.ToDouble(txttwo.Text);
string result = Convert.ToString(cal.Result());
//判断计算情况
if (e.KeyCode==Keys.Enter)
{
if (txtresult.Text ==result.ToString())
{
right++;
MessageBox.Show("回答正确");
txtone.Text = "";
txttwo.Text = "";
//txtthree.Text = "";
txtresult.Text = "";
typ1.Text = "";
//typ2.Text = "";
}
else {
MessageBox.Show("回答错误");
txtone.Text = "";
txttwo.Text = "";
//txtthree.Text = "";
txtresult.Text = "";
typ1.Text = "";
//typ2.Text = "";
}
question++;
}
}截图
ASP.net
Calculate计算类；
public abstract class Calculate //抽象类 Calculate
{
private double a;//第一个数
public double A//封装字段
{
get { return a; }
set { a = value; }
}
private double b;//第二个数字段封装
public double B
{
get { return b; }
set { b = value; }
}
public double result;
public virtual double Result()
{
return result;
}
}
public class Add : Calculate
{
public override double Result()
{
result = A + B;
return result;
}
}
public class Sub : Calculate
{
public override double Result()
{
result = A - B;
return result;
}
}
public class Mul : Calculate
{
public override double Result()
{
result = A * B;
return result;
}
}
public class Div : Calculate
{
public override double Result()
{
if (A == 0)
{
MessageBox.Show("分母不能为零");
}
result = A / B;
return result;
}
}
public class Mod : Calculate
{
public override double Result()
{
if (A == 0)
{
MessageBox.Show("分母不能为零");
}
result = A % B;
return result;
}
}
public class calculate
{
public static Calculate Cal(string type)
{
Calculate cal = null;
switch (type)
{
case "+":
cal = new Add(); //加法策略模式
break;
case "-":
cal = new Sub();
break;
case "*":
cal = new Mul();
break;
case "/":
cal = new Div();
break;
case "%":
cal = new Mod();
break;
default:
break;
}
return cal;
}
}
}
后台代码
protected void calcilate_Click(object sender, EventArgs e)
{
Calculate cal = null;
string typ = DDLtype.SelectedValue.ToString();//调用类成员
cal = calculate.Cal(typ);//运算类型
cal.A = Convert.ToDouble(one.Text);//第一个数
cal.B = Convert.ToDouble(two.Text);//第二个数
string answer = Convert.ToString(cal.Result());//答案
if (result.Text == answer.ToString())//判断计算结果
{
Response.Write("<script>alert(‘回答正确‘)</script>");
Panel1.GroupingText = one.Text + DDLtype.SelectedValue + two.Text + Label1.Text + result.Text;//将题放入panel中
one.Text = "";
two.Text = "";
result.Text = "";
DDLtype.SelectedValue = "请选择计算类型";
}
else
{
Response.Write("<script>alert(‘回答错误‘)</script>");
one.Text = " ";
two.Text = " ";
result.Text = " ";
DDLtype.SelectedValue = "请选择计算类型";
}
Panel1.Visible = true;
}
截图
时间： 2024-10-24 03:37:27