Add 学生成绩管理系统

学生成绩管理系统

@@ -0,0 +1,92 @@
+#include <iostream>
+#include <fstream> // For file operations
+
+const int MAX_STUDENTS = 100; // Maximum number of students
+
+struct Student {
+    std::string name;
+    int score;
+};
+
+Student students[MAX_STUDENTS];
+int num_students = 0;
+
+void input_scores() {
+    // Implementation for inputting student scores
+    // Ensure robust input and range checking
+}
+
+void modify_delete_data() {
+    // Implementation for modifying or deleting student data
+}
+
+void calculate_statistics() {
+    // Implementation for calculating statistics like max, min, average scores
+}
+
+void save_to_file() {
+    std::ofstream file("student_scores.txt");
+    if (file.is_open()) {
+        for (int i = 0; i < num_students; ++i) {
+            file << students[i].name << "," << students[i].score << "\n";
+        }
+        file.close();
+    } else {
+        std::cerr << "Unable to save to file." << std::endl;
+    }
+}
+
+void load_from_file() {
+    std::ifstream file("student_scores.txt");
+    if (file.is_open()) {
+        num_students = 0;
+        std::string line;
+        while (std::getline(file, line)) {
+            std::istringstream ss(line);
+            std::string name;
+            int score;
+            if (std::getline(ss, name, ',') && ss >> score) {
+                students[num_students].name = name;
+                students[num_students].score = score;
+                num_students++;
+            }
+        }
+        file.close();
+    }
+}
+
+void display_menu() {
+    // Implementation for displaying menu and handling user input
+}
+
+int main() {
+    load_from_file(); // Load data from file on startup
+
+    bool exit_program = false;
+    while (!exit_program) {
+        display_menu();
+        int choice;
+        std::cin >> choice;
+        switch (choice) {
+            case 1:
+                input_scores();
+                break;
+            case 2:
+                modify_delete_data();
+                break;
+            case 3:
+                calculate_statistics();
+                break;
+            case 4:
+                save_to_file();
+                exit_program = true;
+                break;
+            default:
+                std::cout << "Invalid choice. Please try again." << std::endl;
+                break;
+        }
+    }
+
+    return 0;
+}
+xueshengcehngjiguanlixitong