diff --git a/学籍管理系统3.cpp b/学籍管理系统3.cpp
new file mode 100644
index 0000000..1e87099
--- /dev/null
+++ b/学籍管理系统3.cpp
@@ -0,0 +1,74 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+// 定义结构体表示学生信息
+typedef struct Student {
+    int id;
+    double mathScore;
+    double physicsScore;
+    double englishScore;
+    double totalScore;
+    double averageScore;
+} Student;
+
+// 交换两个学生结构体的内容
+void swap(Student *a, Student *b) {
+    Student temp = *a;
+    *a = *b;
+    *b = temp;
+}
+
+// 按照总成绩对学生数组进行排序（冒泡排序示例，可替换为更高效的排序算法）
+void sortStudents(Student students[], int numStudents) {
+    for (int i = 0; i < numStudents - 1; i++) {
+        for (int j = 0; j < numStudents - i - 1; j++) {
+            if (students[j].totalScore > students[j + 1].totalScore) {
+                swap(&students[j], &students[j + 1]);
+            }
+        }
+    }
+}
+
+int main() {
+    Student students[3];
+    char choice;
+
+    // 显示主菜单
+    printf("                           1.Input\n");
+    printf("                           2.Output\n");
+    printf("                           3.Order\n");
+    printf("                           4.Quit\n");
+
+    scanf(" %c", &choice);
+    switch (choice) {
+    case 'i':
+        printf("Please input info of the three students:\n");
+        for (int i = 0; i < 3; i++) {
+            scanf("%d", &students[i].id);
+            scanf("%lf", &students[i].mathScore);
+            scanf("%lf", &students[i].physicsScore);
+            scanf("%lf", &students[i].englishScore);
+            students[i].totalScore = students[i].mathScore + students[i].physicsScore + students[i].englishScore;
+            students[i].averageScore = students[i].totalScore / 3;
+        }
+
+        sortStudents(students, 3);
+
+        for (int i = 0; i < 3; i++) {
+            printf("%d,%.1lf,%.1lf\n", students[i].id, students[i].totalScore, students[i].averageScore);
+        }
+        break;
+    case 'm':
+        printf("You are trying to Make things ordered\n");
+        break;
+    case 'q':
+        printf("You are about to Quit\n");
+        break;
+    default:
+        printf("Wrong input\n");
+        break;
+    }
+
+    return 0;
+}
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