C#编写计算器

1、用C#实现的计算器编写By红泪夜中飘一：全局变量private bool t = true; /控制文本是否清空private string OP; /运算符 赋值private double OP1; /第一次输入变量 赋值private double OP2; /第二次输入变量 赋值private double result; /结果1private int n; /阶乘变量private int i = 1; /阶乘变量private Button btn; /读入数字键、字符private int g; /平均数的个数private double G1; /平均数首次输入的变量 赋值p

2、rivate double G2; /private bool t2 = true;private bool t3 = true;private string op;private int i2;private double number;二：具体代码实现/数字键private void 数字键(object sender, EventArgs ebtn = (Buttonsender;if (ttextBox1.Text = ;t = false;if (textBox1.Text = 0textBox1.Text = btn.Text;elsetextBox1.Text = textBox

3、1.Text + btn.Text;/小数点private void button44_Click(object sender, EventArgs eif. = -1textBox1.Text += .;/运算符private void 运算符(object sender, EventArgs ebtn = (Buttonsender;OP = btn.Text;OP1 = System.Convert.ToDouble(textBox1.Text;textBox1.Text = ;/正负号private void button50_Click(object sender, EventArg

4、s eresult = -System.Convert.ToDouble(textBox1.Text;textBox1.Text = result.ToString(;/倒数private void button11_Click(object sender, EventArgs eif (textBox1.Text != 0result = 1 / Convert.ToDouble(textBox1.Text;textBox1.Text = result.ToString(;t = true;elseMessageBox.Show(除数不能为零！;/等号private void button6

5、0_Click(object sender, EventArgs edouble result1 = 0;OP2 = System.Convert.ToDouble(textBox1.Text;switch (OPcase+:result1 = OP1 + OP2;break;case-:result1 = OP1 - OP2;break;case*:result1 = OP1 * OP2;break;case/:result1 = OP1 / OP2;break;case%:if (OP2 != 0result1 = OP1 % OP2; elseMessageBox.Show(除数不能为零

6、!;break;textBox1.Text = result1.ToString(;t = true;/C(全部清除private void button1_Click(object sender, EventArgs ei = 1;i2 = 0;n = 0;OP1 = 0;OP2 = 0;result = 0;textBox1.Text = 0;G1 = 0;G2 = 0;t = t2 = t3 = true;/BS(清除当前private void button2_Click(object sender, EventArgs etextBox1.Text = 0;/CE(清除单个priva

7、te void button3_Click(object sender, EventArgs eifelse textBox1.Text = 0;/平方private void button59_Click_1(object sender, EventArgs eresult = Convert.ToDouble(textBox1.Text * Convert.ToDouble(textBox1.Text;textBox1.Text = result.ToString(;t = true;private void Form1_Load(object sender, EventArgs e/阶乘

8、private void button5_Click(object sender, EventArgs eif (ttextBox1.Text = ;t = false;n = int.Parse(textBox1.Text;for (i=1; n 0; n-i = i * n;textBox1.Text = i.ToString(;t = true;/平均数private void 平均数(object sender, EventArgs eif (t2textBox1.Text = 请输入要计算的元素个数,按输入键继续;t = true;t2 = false;elsebtn = (Butt

9、onsender;op = btn.Text;switch (opcase输入:tryif (t3g = Int32.Parse(textBox1.Text;number = new doubleg;t3 = false;t = true;t2 = false;textBox1.Text = 输入数据;elsetrynumberi2 = double.Parse(textBox1.Text;catch (System.IndexOutOfRangeExceptionMessageBox.Show(输入元素个数超过限定;i2+;t = true;catchbreak;caseAve:if (i2 gtextBox1.Text = 您输入的元素好像少了吧！