C#實現簡易計算器功能(附源碼)
更新時間:2021年07月21日 12:16:21 作者:Just Do Its
這篇文章主要為大家詳細介紹了C#實現簡易計算器,文中示例代碼介紹的非常詳細,具有一定的參考價值,感興趣的小伙伴們可以參考一下
本文實例為大家分享了C#實現簡易計算器功能的具體代碼,供大家參考,具體內容如下
剖析:
1、先設計界面(按鈕、文本框(一個顯示算式,一個顯示結果))布局
2、單擊按鈕將其對應內容顯示在文本框中
3、單擊符號(+、-、×、÷、%)時將第一次輸入的數儲存起來
4、單擊等號時將第二次輸入的數存儲起來并將第一次輸入的數與第二次輸入的數按照所單擊的符號進行運算將結果顯示在第一個文本框中
5、單擊C時將兩個文本框中的內容清空
重點:
1、聲明一個bool類型的變量用于實現單擊符號再次輸入數字時第一次輸入的數字清空顯示第二次輸入的數字
2、聲明兩個double類型的變量用于裝第一次輸入的數和裝第二次輸入的數
3、聲明一個string類型的變量用于判斷運算符號
界面布局:
具體代碼如下:
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 Test_Calculator { public partial class Form1 : Form { public Form1() { InitializeComponent(); } //聲明三個變量 string type; //符號類型 double x;//裝第一個數(按符號(+-×÷%)時textbox1中的數字) double y;//裝第二個數(按等號時textbox1中的數字) bool c=false; private void Form1_Load(object sender, EventArgs e) { this.CenterToScreen();//窗體居中顯示 this.Text = "計算器"; this.FormBorderStyle = FormBorderStyle.FixedToolWindow; textBox1.ReadOnly = true;//文本框只讀 textBox2.TabIndex = 0;//光標焦點在textbox2中 } private void button1_Click(object sender, EventArgs e) { if (c==true) { c = false; textBox1.Text = ""; } textBox1.Text += "1"; textBox2.Text += "1"; } private void button2_Click(object sender, EventArgs e) { if (c == true) { c = false; textBox1.Text = ""; } textBox1.Text += "2"; textBox2.Text += "2"; } private void button3_Click(object sender, EventArgs e) { if (c == true) { c = false; textBox1.Text = ""; } textBox1.Text += "3"; textBox2.Text += "3"; } private void button4_Click(object sender, EventArgs e) { if (c == true) { c = false; textBox1.Text = ""; } textBox1.Text += "4"; textBox2.Text += "4"; } private void button5_Click(object sender, EventArgs e) { if (c == true) { c = false; textBox1.Text = ""; } textBox1.Text += "5"; textBox2.Text += "5"; } private void button6_Click(object sender, EventArgs e) { if (c == true) { c = false; textBox1.Text = ""; } textBox1.Text += "6"; textBox2.Text += "6"; } private void button7_Click(object sender, EventArgs e) { if (c == true) { c = false; textBox1.Text = ""; } textBox1.Text += "7"; textBox2.Text += "7"; } private void button8_Click(object sender, EventArgs e) { if (c == true) { c = false; textBox1.Text = ""; } textBox1.Text += "8"; textBox2.Text += "8"; } private void button9_Click(object sender, EventArgs e) { if (c == true) { c = false; textBox1.Text = ""; } textBox1.Text += "9"; textBox2.Text += "9"; } private void button10_Click(object sender, EventArgs e) { if (c == true) { c = false; textBox1.Text = ""; } textBox1.Text += "0"; textBox2.Text += "0"; } private void button11_Click(object sender, EventArgs e) { textBox1.Text += "."; textBox2.Text += "."; } private void button12_Click(object sender, EventArgs e) { textBox1.Text = ""; textBox2.Text = ""; } private void button13_Click(object sender, EventArgs e) { c = true; type = "+"; textBox2.Text += "+"; x = double.Parse(textBox1.Text); } private void button14_Click(object sender, EventArgs e) { c = true; type = "-"; textBox2.Text += "-"; x = double.Parse(textBox1.Text); } private void button15_Click(object sender, EventArgs e) { c = true; type = "×"; textBox2.Text += "×"; x = double.Parse(textBox1.Text); } private void button16_Click(object sender, EventArgs e) { c = true; type = "÷"; textBox2.Text += "÷"; x = double.Parse(textBox1.Text); } private void button18_Click(object sender, EventArgs e) { c = true; type = "%"; textBox2.Text += "%"; x = double.Parse(textBox1.Text); } private void button17_Click(object sender, EventArgs e) { y = double.Parse(textBox1.Text); //法一 while (type=="+") { textBox1.Text = (x + y).ToString(); textBox2.Text += "=" + textBox1.Text; return; } while (type == "-") { textBox1.Text = (x - y).ToString(); textBox2.Text += "=" + textBox1.Text; return; } while (type == "×") { textBox1.Text = (x * y).ToString(); textBox2.Text += "=" + textBox1.Text; return; } while (type == "÷") { if (y!=0) { textBox1.Text = (x / y).ToString(); textBox2.Text += "=" + textBox1.Text; } else { MessageBox.Show("請重新輸入","錯誤",MessageBoxButtons.OK,MessageBoxIcon.Information); textBox1.Text = ""; textBox2.Text = ""; } return; } while (type == "%") { textBox1.Text = (x % y).ToString(); textBox2.Text += "=" + textBox1.Text; return; } //法二: //if (type=="+") //{ // textBox1.Text=(x + y).ToString(); // textBox2.Text += "=" + textBox1.Text; //} //if (type=="-") //{ // textBox1.Text = (x - y).ToString(); // textBox2.Text += "=" + textBox1.Text; //} //if (type=="×") //{ // textBox1.Text = (x * y).ToString(); // textBox2.Text += "=" + textBox1.Text; //} //if (type=="÷") //{ // textBox1.Text = (x / y).ToString(); // textBox2.Text += "=" + textBox1.Text; //} //if (type=="%") //{ // textBox1.Text = (x % y).ToString(); // textBox2.Text += "=" + textBox1.Text; //} } } }
效果圖:
以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支持腳本之家。