实验二完成

homework1/test2.cpp

@@ -1,3 +1,42 @@
-//
-// Created by 31416 on 24-9-26.
-//
+#include <iomanip>
+#include <iostream>
+
+using namespace std;
+
+typedef struct {
+    string id;
+    string name;
+    double price;
+} book;
+
+void swap(book &a, book &b) {
+    book temp = a;
+    a = b;
+    b = temp;
+}
+
+void sort(book *arr, int size) {
+    for (int i = 0; i < size - 1; i++) {
+        for (int j = 0; j < size - 1 - i; j++) {
+            if (arr[j].price < arr[j + 1].price) {
+                swap(arr[j], arr[j + 1]);
+            }
+        }
+    }
+}
+
+int main() {
+    book books[100];
+    int size = 0;
+    for (size = 0; 1; size++) {
+        cin >> books[size].id >> books[size].name >> books[size].price;
+        if (books[size].id == "0" && books[size].name == "0" && books[size].price == 0) {
+            break;
+        }
+    }
+    sort(books, size);
+    for (int i = 0; i < size; i++) {
+        cout << books[i].id << " " << books[i].name << " " << fixed << setprecision(2) << books[i].price << endl;
+    }
+    return 0;
+}