c#_制作計(jì)算器代碼

1、using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;/*計(jì)算器算法當(dāng)每次安19的數(shù)字按鍵，調(diào)用一個(gè)anniu方法，在aniu方法用是否輸入運(yùn)算符來(lái)判斷是否是輸入的是第一個(gè)第二個(gè)值，中間在判斷是否是小數(shù)的數(shù)值算法。普通值的算法是a=a*10+i;i為傳入的參數(shù)的值小數(shù)值的算法是a=a+i/s;s=s*10;s為小數(shù)的位數(shù)，1為無(wú)10為1

2、位，100為2位。運(yùn)算符號(hào)方法的算法調(diào)用fh這個(gè)方法判斷當(dāng)前是否有輸入過(guò)運(yùn)算符如果無(wú)則給運(yùn)算字符串賦值為傳入的值，并置空小數(shù)位有則調(diào)js計(jì)算的方法，并并置空小數(shù)位，在給運(yùn)算字符串賦值為傳入的值。計(jì)算的方法由于數(shù)不能為0所以首先判斷是否為處號(hào)除數(shù)不能為0如果是則不計(jì)算跳出否則計(jì)算相應(yīng)的符號(hào)計(jì)算并顯示 */namespace WindowsApplication1 public partial class Form1 : Form String Fh=""/用于存儲(chǔ)符號(hào)運(yùn)算符 double a, b, c;/a為第一個(gè)接收的值，b為第二個(gè)值，c為計(jì)算結(jié)果 long s = 1;

3、/初始小數(shù)的位數(shù) public Form1() InitializeComponent(); public void anniu(double i)/按鈕的方法 if (Fh.Equals("")/是否當(dāng)前有運(yùn)算符 if (s = 1)/判斷是否有小數(shù)點(diǎn) a = a * 10 + i;/計(jì)算無(wú)小數(shù)的值 else a = a + i / s;/計(jì)算有小數(shù)的值 s = s * 10;/計(jì)算下一個(gè)小數(shù)的位置 textBox1.Text = a.ToString();/顯示計(jì)算的結(jié)果 else /當(dāng)前有運(yùn)算符的方法 if (!(c = 0) b = 0; c = 0; /當(dāng)有計(jì)算結(jié)

4、果就清除B的值 if (s = 1)/判斷是否有小數(shù)點(diǎn) b = b * 10 + i;/計(jì)算無(wú)小數(shù)的值 else if (i = 0)/判斷在小數(shù)位后添加0 s = s * 10;/計(jì)算下一個(gè)小數(shù)的位置 else b = b + i / s;/計(jì)算有小數(shù)的值 s = s * 10;/計(jì)算下一個(gè)小數(shù)的位置 textBox1.Text = b.ToString();/顯示計(jì)算的結(jié)果 public void js() /數(shù)學(xué)計(jì)算的方法 if (Fh="/")/判斷是否除數(shù)等于0 if (b = 0) /是則不計(jì)算 textBox1.Text = "被除數(shù)不能為0&quo

5、t;/顯示被除數(shù)不能為0 return;/返回 else c = a / b; else/如果不是出發(fā)計(jì)算則執(zhí)行其他計(jì)算 if (Fh.Equals("+") c = a + b; if (Fh.Equals("-") c = a - b; if (Fh.Equals("*") c = a * b; if (Fh.Equals("%") c = a % b; textBox1.Text = c.ToString(); /顯示計(jì)算結(jié)果 a = c;/將結(jié)果給第一個(gè)變量作為 public void fh(string

6、str) /接收運(yùn)算符的方法 if (Fh.Equals("")/當(dāng)前是否已經(jīng)有運(yùn)算符 Fh = str; s = 1;/沒(méi)有則接收運(yùn)算符,小數(shù)點(diǎn)失效 else js(); s = 1; Fh = str;/有則計(jì)算當(dāng)前的值,小數(shù)點(diǎn)失效 private void button1_Click(object sender, EventArgs e)/監(jiān)聽(tīng)按鈕1的單擊事件 anniu(1);/調(diào)用按鈕方法 private void button2_Click(object sender, EventArgs e) anniu(2); private void button3_Cl

7、ick(object sender, EventArgs e) anniu(3); private void button4_Click(object sender, EventArgs e) anniu(4); private void button5_Click(object sender, EventArgs e) anniu(5); private void button7_Click(object sender, EventArgs e) anniu(6); private void button6_Click(object sender, EventArgs e) anniu(7)

8、; private void button8_Click(object sender, EventArgs e) anniu(8); private void button9_Click(object sender, EventArgs e) anniu(9); private void button10_Click(object sender, EventArgs e) if (!textBox1.Text.Equals("0") anniu(0); private void button11_Click(object sender, EventArgs e)/監(jiān)聽(tīng)運(yùn)算符

9、按鈕的事件 fh("+");/調(diào)用運(yùn)算符的方法 private void button12_Click(object sender, EventArgs e) fh("-"); private void button14_Click(object sender, EventArgs e)/清空按鈕 textBox1.Text = "0"/清空TEXTBOX的顯示值 a = 0; b = 0; c = 0; s = 1; Fh = ""/初始化所有值 private void button13_Click(objec

10、t sender, EventArgs e)/等于按鈕 js();/調(diào)用計(jì)算方法 private void button16_Click(object sender, EventArgs e) fh("/"); private void button17_Click(object sender, EventArgs e) fh("%"); private void button15_Click(object sender, EventArgs e) fh("*"); private void button19_Click(object sender, EventArgs e)/正負(fù)號(hào) if (Fh.Equals("") a = -a; textBox1.Text = a.ToString(); else