diff --git a/untitled1.cpp b/untitled1.cpp
new file mode 100644
index 0000000..f8cbb84
--- /dev/null
+++ b/untitled1.cpp
@@ -0,0 +1,107 @@
+#include <iostream>
+#include <fstream>
+#include <string>
+#include <vector>
+
+class Student {
+private:
+	std::string name;
+	int age;
+	int studentNumber;
+	
+public:
+	Student(std::string n, int a, int sn) : name(n), age(a), studentNumber(sn) {}
+	
+	std::string getName() const {
+		return name;
+	}
+	
+	int getAge() const {
+		return age;
+	}
+	
+	int getStudentNumber() const {
+		return studentNumber;
+	}
+};
+
+void saveData(const std::vector<Student>& students) {
+	std::ofstream file("student_data.txt");
+	if (file.is_open()) {
+		for (const auto& student : students) {
+			file << student.getName() << " " << student.getAge() << " " << student.getStudentNumber() << std::endl;
+		}
+		file.close();
+	} else {
+		std::cout << "Error: Unable to open file for writing." << std::endl;
+	}
+}
+
+void readData(std::vector<Student>& students) {
+	std::ifstream file("student_data.txt");
+	if (file.is_open()) {
+		std::string name;
+		int age, studentNumber;
+		while (file >> name >> age >> studentNumber) {
+			students.push_back(Student(name, age, studentNumber));
+		}
+		file.close();
+	} else {
+		std::cout << "No existing data found." << std::endl;
+	}
+}
+
+int main() {
+	std::vector<Student> students;
+	
+	// 读取文件中已存在的数据
+	readData(students);
+	
+	int choice;
+	do {
+		std::cout << "1. Add student\n";
+		std::cout << "2. Delete student\n";
+		std::cout << "3. Update student\n";
+		std::cout << "4. View all students\n";
+		std::cout << "5. Save and exit\n";
+		std::cin >> choice;
+		
+		switch (choice) {
+			case 1: {
+				std::string name;
+				int age, studentNumber;
+				std::cout << "Enter name, age, and student number: ";
+				std::cin >> name >> age >> studentNumber;
+				students.push_back(Student(name, age, studentNumber));
+				break;
+			}
+			case 2: {
+				// Delete student
+				// Your code to delete a student here
+				break;
+			}
+			case 3: {
+				// Update student
+				// Your code to update a student here
+				break;
+			}
+			case 4: {
+				// View all students
+				for (const auto& student : students) {
+					std::cout << student.getName() << " " << student.getAge() << " " << student.getStudentNumber() << std::endl;
+				}
+				break;
+			}
+			case 5: {
+				// Save and exit
+				saveData(students);
+				std::cout << "Data saved. Goodbye!" << std::endl;
+				break;
+			}
+		default:
+			std::cout << "Invalid choice!" << std::endl;
+		}
+	} while (choice != 5);
+	
+	return 0;
+}