夏晓静4/13代码修改

src/CalculatorGUI.java

@@ -147,10 +147,33 @@ public class CalculatorGUI extends JFrame {
             String command = e.getActionCommand();
             if (!command.equals("=")) {
                 if (command.equals("x²") || command.equals("x³") || command.equals("√x") || command.equals("x⁴")) {
-                    // 计算函数值
+                    // 获取表达式和操作符
                     String expression = displayField.getText();
+                    String operator = "";
+                    switch (command) {
+                        case "x²":
+                            operator = "²";
+                            break;
+                        case "x³":
+                            operator = "³";
+                            break;
+                        case "√x":
+                            operator = "√";
+                            break;
+                        case "x⁴":
+                            operator = "⁴";
+                            break;
+                    }
+                    // 计算函数值
                     double result = calculateFunction(expression, command);
+                    // 构建历史记录字符串并添加到历史记录区
+                    String historyEntry = expression + operator + " = " + result;
+                    appendToHistory(historyEntry);
+                    // 显示结果在实时显示区
                     displayField.setText(Double.toString(result));
+                } else if (command.equals("C")) {
+                    // 清除实时显示区域的算术式
+                    displayField.setText("");
                 } else {
                     displayField.setText(displayField.getText() + command);
                 }