一個(gè)用C#寫的小學(xué)數(shù)學(xué)出題聯(lián)系系統(tǒng)源代碼

ID:851418 · 發(fā)表于 2020-11-29 23:26

c#寫的小學(xué)數(shù)學(xué)二年級(jí)自動(dòng)出題系統(tǒng)，實(shí)現(xiàn)自動(dòng)隨機(jī)出題；四則運(yùn)算。對于剛學(xué)C#的朋友掌握光標(biāo)獲取、鎖定光標(biāo)，TAB切換、回車鍵綁定、隨機(jī)數(shù)產(chǎn)生、列表框顯示運(yùn)用等有幫助！

源程序如下:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApp4
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
int a, b,aaa,bbb,bb;
string op;
string op1;
string op2;
int result;
int result1;
int result2;
Random rnd = new Random();
private void Form1_Load(object sender, EventArgs e)
{
}
private void Button1Click(object sender, EventArgs e)
{
a = rnd.Next(10) + 1;
b = rnd.Next(10) + 1;
if (a<=b)
a=a+b;
aaa = rnd.Next(10) + 1;
bbb = rnd.Next(10) + 1;
if (aaa<=bbb)
aaa=aaa+bbb;
bb = rnd.Next(8) + 1;
int c = rnd.Next(3);
int cc = rnd.Next(3);
int ccc = rnd.Next(2);
switch (c)
{
case 0: op = "+"; result = a + b; break;
case 1: op = "-"; result = a - b; break;
case 2: op = "×"; result = a * b; break;
case 3: op = "÷"; result = a / b; break;
}
switch (cc)
{
case 0: op1 = "+"; result1 = aaa + bbb ; break;//OP1表示當(dāng)前運(yùn)算符號(hào)和結(jié)果，運(yùn)算結(jié)果result1等于加數(shù)+加數(shù)
case 1: op1 = "-"; result1 = aaa - bbb ; break;//OP1表示當(dāng)前運(yùn)算符號(hào)和結(jié)果，運(yùn)算結(jié)果result1等于被減數(shù)-減數(shù)
case 2: op1 = "×"; result1 = aaa * bbb ; break;//OP1表示當(dāng)前運(yùn)算符號(hào)和結(jié)果，運(yùn)算結(jié)果result1等于乘數(shù)*乘數(shù)
case 3: op1 = "÷"; result1 = aaa / bbb ; break;//OP1表示當(dāng)前運(yùn)算符號(hào)和結(jié)果，運(yùn)算結(jié)果result1等于除數(shù)/除數(shù)
}
switch (ccc)
{
case 0: op2 = "+"; result2 = result1 + bb; break;
case 1: op2 = "×"; result2 = result1 * bb; break;
}
textBox2.Text = a.ToString();//算式1中的從左邊到右第一個(gè)數(shù)
textBox3.Text = b.ToString();//算式1中的從左邊到右第二個(gè)數(shù)
textBox4.Text = aaa.ToString();//算式2中的從左邊到右第一個(gè)數(shù)
textBox5.Text = bbb.ToString();//算式2中的從左邊到右第二個(gè)數(shù)
textBox6.Text = bb.ToString();//算式2中的從左邊到右第三個(gè)數(shù)
label2.Text = op;//算式1中的運(yùn)算符號(hào)，隨機(jī)產(chǎn)生對應(yīng)的符號(hào)
label1.Text = op1;//算式2中的運(yùn)算符號(hào)，隨機(jī)產(chǎn)生對應(yīng)的符號(hào)
label6.Text = op2;//算式2中的運(yùn)算符號(hào)，隨機(jī)產(chǎn)生對應(yīng)的符號(hào)
textBox1.Text="";//按鍵后清空文本框的內(nèi)容！
textBox7.Text="";//按鍵后清空文本框的內(nèi)容！
textBox1.Focus();
}
private void Button2Click(object sender, EventArgs e)
{
//if (textBox1.Text =="")
// MessageBox.Show("請輸入數(shù)字，不能為空");
//else
// MessageBox.Show("輸入的數(shù)字正確");
if (textBox1.Text == "")//判斷是否輸入的用戶名，如果沒有輸入，顯示下面的提示，否則跳到else
{
MessageBox.Show("答案不能為空！", "警告", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
if (textBox7.Text == "")//判斷是否輸入的用戶名，如果沒有輸入，顯示下面的提示，否則跳到else
{
MessageBox.Show("答案不能為空！", "警告", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
else
{
string str = textBox1.Text;//文本框輸入為等式的結(jié)果，結(jié)果答案輸入處。
string str1 = textBox7.Text;
double d = double.Parse(str);
double dd = double.Parse(str1);
string disp = " " + a + op + b + "=" + str + " ";
string disp1 = " " + aaa + op1 + bbb + op2 + bb + "=" + str1 + " ";
if (d == result) // if( Math.Abs(d-result)< 1e-3 )
disp += "√ 答案正確劉穎穎你真棒";
else
disp += "╳ 答案錯(cuò)誤加油重新列算式運(yùn)算";
if (dd == result2) // if( Math.Abs(d-result)< 1e-3 )
disp1 += "√ 答案正確劉穎穎你真棒";
else
disp1 += "╳ 答案錯(cuò)誤加油重新列算式運(yùn)算";
lstDisp.Items.Add(disp);
lstDisp.Items.Add(disp1);
textBox1.Text="";//清空上一次輸入的結(jié)果！
textBox7.Text="";//清空上一次輸入的結(jié)果！
}
}
void TextBox1KeyPress(object sender, KeyPressEventArgs e)
{
if(!(char.IsNumber(e.KeyChar))&& e.KeyChar !=(char)8)
{
e.Handled = true;//判定為數(shù)字，可以輸入
}
}
void LstDispSelectedIndexChanged(object sender, EventArgs e)
{
if (lstDisp.Text.Length >10)
lstDisp.Text = "";
}
void TextBox7KeyPress(object sender, KeyPressEventArgs e)
{
if(!(char.IsNumber(e.KeyChar))&& e.KeyChar !=(char)8)
{
e.Handled = true;//判定為數(shù)字，可以輸入
}
}
void Button3Click(object sender, EventArgs e)
{
lstDisp.Items.Clear();
}
}
}