混合运算改进（代码）
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace 算
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
//定义变量
public static int count = -1;
public static int right = 0;
public static int sun;
public static int shi = 0;
//产生随机数
private void suiji()
{
Random ra = new Random();
int h = int.Parse(textBox4.Text) + 1;
int j = int.Parse(textBox5.Text);
int a, b, c;
a = ra.Next(h, j);
b = ra.Next(h, a);
c = ra.Next(a, j);
label2.Text = a.ToString();
label4.Text = b.ToString();
label7.Text = c.ToString();
textBox1.Text = "";
count++;
}
//随机产生加减乘除
private void suanfa()
{
string[] oper = new string[] { "+", "-", "*", "/" };
string f = oper[new Random().Next(0, 4)];
string h = oper[new Random().Next(0, 4)];
label3.Text = f;
label6.Text = h;
}
//得到正确答案！
private void zhenque()
{
if (comboBox1.Text == "前两个加括号")
{
}
if (comboBox1.Text == "不加括号")
{
kuohao()
}
if (comboBox1.Text == "后两个加括号")
{
}
}
private void timer1_Tick(object sender, EventArgs e)
{
if (shi <= 0)
{
timer1.Enabled = false;
textBox1.Enabled = false;
MessageBox.Show("时间到！");
Form2 da = new Form2();
da.ShowDialog();
}
shi = shi - 1;
textBox2.Text = shi.ToString();
}
private void button1_Click(object sender, EventArgs e)
{
shi = int.Parse(textBox2.Text);
textBox2.Text = shi.ToString();
timer1.Enabled = true;
timer1.Interval = 1000;
timer1.Start();
suiji();
suanfa();
}
private void textBox1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
{
//判定数字是否合法！
int i = 0;
string an = textBox1.Text;
if (int.TryParse(an, out i) == false)
{
MessageBox.Show("你输得的数字不合法！");
}
//判定是否正确
zhenque();
if (textBox1.Text == sun.ToString())
{
right++;
}
suiji();
suanfa();
//判断是否达到总题数
int q = int.Parse(textBox3.Text);
if (count == q)
{
timer1.Enabled = false;
textBox3.Enabled = false;
Form2 da = new Form2();
da.ShowDialog();
}
}
}
private void button2_Click(object sender, EventArgs e)
{
timer1.Enabled = false;
textBox3.Enabled = false;
Form2 da = new Form2();
da.ShowDialog();
}
private void button3_Click(object sender, EventArgs e)
{
this.Close();
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
string a=comboBox1.Text;
if (a == "前两个加括号")
{
av("(",")","" ,"" );
}
if (a == "后两个加括号")
{
av("", "", "（", ")");
}
if (a == "不加括号")
{
av("", "", "", "");
}
}
private void kuohao()
{
string f = label3.Text;
String g = label6.Text;
int x= int.Parse(label2.Text);
int y=int.Parse(label4.Text);
int z= int.Parse(label7.Text);
string fg = f + g;
switch (fg)
{
case "++":
sun =x+y+z;
break;
case "+-":
sun = x + y - z;
break;
case "+*":
sun = x + y * z;
break;
case "+/":
sun = x +y / z;
break;
case "-+":
sun = x-y +z;
break;
case "--":
sun = x- y - z;
break;
case "-*":
sun = x- y * z;
break;
case "-/":
sun = x- y / z;
break;
case "*+":
sun = x* y +z;
break;
case "*-":
sun = x* y-z;
break;
case "**":
sun = x* y* z;
break;
case "*/":
sun = x* y/ z;
break;
case "/+":
sun = x/ y+ z;
break;
case "/-":
sun = x/ y- z;
break;
case "/*":
sun = x/ y*z;
break;
case "//":
sun = x/ y / z;
break;
}
}
private void av(string va1,string va2,string va3,string va4)
{
label1.Text = va1;
label5.Text = va2;
label14.Text = va3;
label15.Text = va4;
}
}
}
总结
这样写感觉很轻松也很整齐，没有的代码的重复性！代码也简洁了不少，就像老师说的一样有一些代码美，虽然还不够完善！不够美！
还有就是上面的代码有一个地方没有实现，就是有无括号写的正确判断！所以也没有引用自定义的方法！
private void zhenque()
{
if (comboBox1.Text == "前两个加括号")
{
}
if (comboBox1.Text == "不加括号")
{
}
if (comboBox1.Text == "后两个加括号")
{
}
}
不知道怎么给自定义的方法传括号的参数
private void kuohao()
{
string f = label3.Text;
String g = label6.Text;
int x= int.Parse(label2.Text);
int y=int.Parse(label4.Text);
int z= int.Parse(label7.Text);
string fg = f + g;
switch (fg)
{
case "++":
sun =x+y+z;
break;
case "+-":
sun = x + y - z;
break;
case "+*":
sun = x + y * z;
break;
case "+/":
sun = x +y / z;
break;
case "-+":
sun = x-y +z;
break;
case "--":
sun = x- y - z;
break;
case "-*":
sun = x- y * z;
break;
case "-/":
sun = x- y / z;
break;
case "*+":
sun = x* y +z;
break;
case "*-":
sun = x* y-z;
break;
case "**":
sun = x* y* z;
break;
case "*/":
sun = x* y/ z;
break;
case "/+":
sun = x/ y+ z;
break;
case "/-":
sun = x/ y- z;
break;
case "/*":
sun = x/ y*z;
break;
case "//":
sun = x/ y / z;
break;
}
