diff --git "a/\344\275\234\344\270\232/.keep" "b/\344\275\234\344\270\232/.keep"
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diff --git "a/\344\275\234\344\270\232/5.18---webc#\350\256\241\347\256\227\345\231\250\357\274\210\347\256\200\345\215\225\357\274\211.md" "b/\344\275\234\344\270\232/5.18---webc#\350\256\241\347\256\227\345\231\250\357\274\210\347\256\200\345\215\225\357\274\211.md"
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--- /dev/null
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@@ -0,0 +1,102 @@
+# 5.18---webc#计算器（简单）
+
+```c#
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Web;
+using System.Web.UI;
+using System.Web.UI.WebControls;
+
+namespace 计算器
+{
+ public partial class WebForm1 : System.Web.UI.Page
+ {
+ protected void Page_Load(object sender, EventArgs e)
+ {
+
+ }
+ double op1,op2, result = 0;
+ char op;
+ protected void Button2_Click(object sender, EventArgs e)
+ {
+ Label1.Text = "+";
+ TextBox1.Enabled = false;
+ }
+ protected void Button3_Click(object sender, EventArgs e)
+ {
+ Label1.Text = "/";
+ TextBox1.Enabled = false;
+ }
+ protected void Button4_Click(object sender, EventArgs e)
+ {
+ Label1.Text = "-";
+ TextBox1.Enabled = false;
+ }
+ protected void Button5_Click(object sender, EventArgs e)
+ {
+ Label1.Text = "*";
+ TextBox1.Enabled = false;
+ }
+ protected void Button1_Click(object sender, EventArgs e)
+ {
+ Label2.Text = "=";
+ TextBox2.Enabled = false;
+ op1 = double.Parse(TextBox1.Text);
+ op2 = double.Parse(TextBox2.Text);
+ op = Convert.ToChar(Label1.Text);
+ switch (op)
+ {
+ case '+':
+ result = op1 + op2;
+ TextBox3.Text = result.ToString();
+ break;
+ case '-':
+ result = op1 - op2;
+ TextBox3.Text = result.ToString();
+ break;
+ case '*':
+ result = op1 * op2;
+ TextBox3.Text = result.ToString();
+ break;
+ case '/':
+ result = op1 / op2;
+ TextBox3.Text = result.ToString();
+ break;
+ default:
+ break;
+ }
+ }
+ }
+}
+```
+
+```html
+
+
+
+
+
+
+ 计算器
+
+
+
+
+
+
+```
+
diff --git "a/\347\254\224\350\256\260/.keep" "b/\347\254\224\350\256\260/.keep"
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391