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 计算器
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void toolStripLabel1_Click(object sender, EventArgs e)
{
}
private void menuStrip1_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
}
private void 科学型ToolStripMenuItem_Click(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
private void button1_Click_1(object sender, EventArgs e)
{
this.textBox1.Text = "";
}
public bool down;
private void dd_Click(object sender, EventArgs e)
{
if(down)
{
if (this.textBox1.Text.Contains("+") && this.textBox1.Text.Substring(textBox1.Text.Length - 1) == "0")
{
this.textBox1.Text += ".";
}
else
{ this.textBox1.Text = "输入错误"; }
down = false;
}
else
{
this.textBox1.Text += ".";
down = true;
}
}
public double fuhao;
private void and_Click(object sender, EventArgs e)
{
fuhao = 1;
this.textBox1.Text += "+";
}
private void dengyu_Click(object sender, EventArgs e)
{
if (this.textBox1.Text.Substring(0, 1) == "-")
{
this.textBox1.Text = this.textBox1.Text.Substring(1);
double sum;
char[] chr = new char[] { '+', '-', '*', '/', '%' };
string[] no = this.textBox1.Text.Split(chr);
double a = -Convert.ToDouble(no[0]);
double b = Convert.ToDouble(no[1]);
if (fuhao == 1)
{
sum = a + b;
textBox1.Text = Convert.ToString(sum);
}
else if (fuhao == 2)
{
sum = a - b;
textBox1.Text = Convert.ToString(sum);
}
else if (fuhao == 3)
{
sum = a * b;
textBox1.Text = Convert.ToString(sum);
}
else if (fuhao == 4)
{
sum = a / b;
textBox1.Text = Convert.ToString(sum);
}
}
else
{
double sum;
char[] chr = new char[] { '+', '-', '*', '/', '%' };
for (int i = 0; i < chr.Length; i++)
{
if (!this.textBox1.Text.Contains(chr[i]))
{
this.textBox1.Text = this.textBox1.Text;
}
else
{
string[] no = this.textBox1.Text.Split(chr);
double a = Convert.ToDouble(no[0]);
double b = Convert.ToDouble(no[1]);
if (fuhao == 1)
{
sum = a + b;
textBox1.Text = Convert.ToString(sum);
}
else if (fuhao == 2)
{
sum = a - b;
textBox1.Text = Convert.ToString(sum);
}
else if (fuhao == 3)
{
sum = a * b;
textBox1.Text = Convert.ToString(sum);
}
else if (fuhao == 4)
{
sum = a / b;
textBox1.Text = Convert.ToString(sum);
}
else if (fuhao == 5)
{
sum = a % b;
textBox1.Text = Convert.ToString(sum);
}
}
}
}
}
private void jian_Click(object sender, EventArgs e)
{
fuhao = 2;
this.textBox1.Text += "-";
}
private void cheng_Click(object sender, EventArgs e)
{
fuhao = 3;
this.textBox1.Text += "*";
}
private void chu_Click(object sender, EventArgs e)
{
fuhao = 4;
this.textBox1.Text += "/";
}
private void num6_Click(object sender, EventArgs e)
{
Button btr = (Button)sender;
if (this.textBox1.Text == "0")
{
this.textBox1.Text = btr.Text ;
}
else
{
this.textBox1.Text += btr.Text ;
}
}
private void back_Click(object sender, EventArgs e)
{
if (this.textBox1.Text.Length == 1)
{
this.textBox1.Text = "0";
}
else
{
this.textBox1.Text = this.textBox1.Text.Substring(0, this.textBox1.Text.Length - 1);
}
}
private void yu_Click(object sender, EventArgs e)
{
fuhao = 5;
this.textBox1.Text += "%";
}
private void clear_Click(object sender, EventArgs e)
{
this.textBox1.Text = "0";
}
private void reverst_Click(object sender, EventArgs e)
{
this.textBox1.Text =( 1 / (Convert.ToDouble( this.textBox1.Text.Trim()))).ToString();
}
private void mi_Click(object sender, EventArgs e)
{
if (Convert.ToDouble(this.textBox1.Text )<=0)
{
this.textBox1.Text = "无效输入";
}
else
{
this.textBox1.Text = Math.Sqrt(Convert.ToDouble(this.textBox1.Text.Trim())).ToString();
}
}
private void zhengfu_Click(object sender, EventArgs e)
{
if (this.textBox1.Text == "0")
{
this.textBox1.Text = this.textBox1.Text;
}
else if (Convert.ToDouble(this.textBox1.Text) < 0)
{
this.textBox1.Text = this.textBox1.Text.Substring(1);
}
else
{
this.textBox1.Text = "-" + this.textBox1.Text;
}
}
}
}