diff --git a/学生成绩管理系统.cpp b/学生成绩管理系统.cpp
new file mode 100644
index 0000000..3ce1cf9
--- /dev/null
+++ b/学生成绩管理系统.cpp
@@ -0,0 +1,280 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+typedef struct {
+    int rank;       // �������
+    char num[20];     // ѧ��
+    char name[10];    // ����
+    int math_score;   // �����ɼ�
+    int datastruct_score; // ���ݽṹ�ɼ�
+    int English_score;    // Ӣ��ɼ�
+    int physics_score;    // �����ɼ�
+    float average;        // ƽ����
+} Student;
+
+typedef struct {
+    Student *data;
+    int length;
+} funlist;
+
+// ��ʼ�����Ա�
+void initlist(funlist *l) {
+    l->data = (Student *)malloc(100 * sizeof(Student));
+    l->length = 0;
+}
+
+// �ж��Ƿ�Ϊ�ձ�
+int isempty(funlist *l) {
+    return l->length == 0;
+}
+
+// ȡֵ
+int getelem(funlist l, int i, Student *e) {
+    if (i < 1 || i > l.length) {
+        printf("λ�ò��Ϸ�\n");
+        return 0;
+    }
+    *e = l.data[i - 1];
+    return 1;
+}
+
+// ����ƽ����
+float calculate_average(Student *s) {
+    return (s->math_score + s->datastruct_score + s->English_score + s->physics_score) / 4.0f;
+}
+
+// ��ӡ��������������
+void printlist_no_rank(funlist l) {
+    int i;
+    printf("�ɼ���Ϊ:\n");
+    for (i = 0; i < l.length; i++) {
+        printf("ѧ��:%s ����:%s ����:%d ���ݽṹ:%d Ӣ��:%d ����:%d ƽ����:%.2f\n",
+               l.data[i].num, l.data[i].name, l.data[i].math_score,
+               l.data[i].datastruct_score, l.data[i].English_score,
+               l.data[i].physics_score, l.data[i].average);
+    }
+}
+
+// ��ӡ��������������
+void printlist_with_rank(funlist l) {
+    int i;
+    printf("�ɼ���Ϊ:\n");
+    for (i = 0; i < l.length; i++) {
+        printf("����:%d ѧ��:%s ����:%s ����:%d ���ݽṹ:%d Ӣ��:%d ����:%d ƽ����:%.2f\n",
+               l.data[i].rank, l.data[i].num, l.data[i].name, l.data[i].math_score,
+               l.data[i].datastruct_score, l.data[i].English_score,
+               l.data[i].physics_score, l.data[i].average);
+    }
+}
+
+// ���Ҳ�������ѧ�Ų��ң� 
+int locateelem1(funlist l, char *num) {
+    int i;
+    for (i = 0; i < l.length; i++) {
+        if (strcmp(l.data[i].num, num) == 0)
+            return i + 1;
+    }
+    return -1;
+}
+
+// ���Ҳ��������������ң�
+int locateelem2(funlist l, char *name) {
+    int i;
+    for (i = 0; i < l.length; i++) {
+        if (strcmp(l.data[i].name, name) == 0)
+            return i + 1;
+    }
+    return -1;
+}
+
+// ɾ������
+int deleteelem(funlist *l, int i) {
+    int j;
+    if (i < 1 || i > l->length) {
+        printf("λ�ò��Ϸ�\n");
+        return 0;
+    }
+    for (j = i; j < l->length; j++) {
+        l->data[j - 1] = l->data[j];
+    }
+    l->length--;
+    // ���µ�������
+    for (j = i - 1; j < l->length; j++) {
+        l->data[j].rank = j + 1;
+    }
+    return 1;
+}
+
+// �������
+int listinsert(funlist *l, int i, Student e) {
+    if (i < 1 || i > l->length + 1) {
+        printf("λ�ò��Ϸ�\n");
+        return 0;
+    }
+    if (l->length >= 100) {
+        printf("���Ա�����\n");
+        return 0;
+    }
+    int j;
+    for (j = l->length - 1; j >= i - 1; j--) {
+        l->data[j + 1] = l->data[j];
+        // ����ƶ�����
+        l->data[j + 1].rank = l->data[j].rank + 1;
+    }
+    // ���㲢����ƽ����
+    e.average = calculate_average(&e);
+    e.rank = i;
+    l->data[i - 1] = e;
+    l->length++;
+    return 1; // ����1��ʾ�ɹ�
+}
+
+// ��ƽ��������
+void sort_by_average(funlist *l) {
+    if (l->length <= 1) return; // ��������
+    
+    int i, j;
+    for (i = 0; i < l->length - 1; i++) {
+        for (j = 0; j < l->length - i - 1; j++) {
+            if (l->data[j].average < l->data[j + 1].average) {
+                Student temp = l->data[j];
+                l->data[j] = l->data[j + 1];
+                l->data[j + 1] = temp;
+            }
+        }
+    }
+    // ��������
+    for (i = 0; i < l->length; i++) {
+        l->data[i].rank = i + 1;
+    }
+    printf("ѧ���Ѱ�ƽ���ֽ�������\n");
+}
+
+int main() {
+    funlist L;
+    initlist(&L); 
+
+    int choice;
+    char num[20];
+    char name[10];
+    int math_score;
+    int datastruct_score;
+    int English_score;
+    int physics_score;
+    int i;
+
+    printf("1.����ѧ��\n");
+    printf("2.ͨ��ѧ�Ų�ѯѧ��\n");
+    printf("3.ͨ��������ѯѧ��\n");
+    printf("4.ɾ��ѧ��\n");
+    printf("5.��ƽ��������ѧ��\n");
+    printf("6.�˳�\n");
+
+    while (1) { 
+        printf("���������ѡ��:");
+        scanf("%d", &choice);
+        switch (choice) {
+            case 1: {
+                Student e;
+                printf("����������:");
+                scanf("%s", name);
+                strcpy(e.name, name);
+                
+                printf("������ѧ��:");
+                scanf("%s", num);
+                strcpy(e.num, num);
+                
+                printf("����������ɼ�:");
+                scanf("%d", &math_score);
+                e.math_score = math_score;
+                
+                printf("���������ݽṹ�ɼ�:");
+                scanf("%d", &datastruct_score);
+                e.datastruct_score = datastruct_score;
+                
+                printf("������Ӣ��ɼ�:");
+                scanf("%d", &English_score);
+                e.English_score = English_score;
+                
+                printf("�����������ɼ�:");
+                scanf("%d", &physics_score);
+                e.physics_score = physics_score;
+                
+                printf("�������������(1-%d):\n", L.length + 1);
+                scanf("%d", &i);
+                
+                if (listinsert(&L, i, e)) {
+                    printf("����ɹ�\n");
+                } else {
+                    printf("����ʧ��\n");
+                }
+                printlist_no_rank(L);
+                printf("\n");
+				break;
+            }
+            
+            case 2: {
+                printf("��������ҵ�ѧ��ѧ��:");
+                scanf("%s", num);
+                i = locateelem1(L, num);
+                if (i != -1) {
+                    Student e;
+                    getelem(L, i, &e);
+                    printf("�ҵ�ѧ��: ѧ��:%s ����:%s ƽ����:%.2f\n", 
+                           e.num, e.name, e.average);
+                } else {
+                    printf("δ�ҵ�ѧ��Ϊ%s��ѧ��\n", num);
+                }
+                  printf("\n");
+                break;
+            }
+            
+            case 3: {
+                printf("��������ҵ�ѧ������:");
+                scanf("%s", name);
+                i = locateelem2(L, name);
+                if (i != -1) {
+                    Student e;
+                    getelem(L, i, &e);
+                    printf("�ҵ�ѧ��: ѧ��:%s ����:%s ƽ����:%.2f\n", 
+                           e.num, e.name, e.average);
+                } else {
+                    printf("δ�ҵ�����Ϊ%s��ѧ��\n", name);
+                }
+                  printf("\n");
+                break;
+            }
+            
+            case 4: {
+                printf("������ɾ����ѧ��λ��:");
+                scanf("%d", &i);
+                if (deleteelem(&L, i)) {
+                    printf("ɾ���ɹ�\n");
+                } else {
+                    printf("ɾ��ʧ��\n");
+                }
+                printlist_no_rank(L);
+                  printf("\n");
+				break;
+            }
+            
+            case 5: {
+                sort_by_average(&L);
+                printlist_with_rank(L);
+                  printf("\n");
+				break;
+            }
+            
+            case 6: {
+                printf("�˳�ϵͳ\n");
+                free(L.data); 
+				return 0;
+            }   
+            default:
+                printf("��Чѡ�����������\n");
+        }
+    }
+
+    return 0;
+}