diff --git a/daima.c b/daima.c
new file mode 100644
index 0000000..bcac5c1
--- /dev/null
+++ b/daima.c
@@ -0,0 +1,83 @@
+void save_data(void)
+{
+    puts("保存数据");
+    printf(" 请输入文件名");
+    char filename[256];
+    scanf("%s", filename);
+    FILE *fp = fopen(filename, "r");
+    if (fp == NULL)
+    {
+        perror(filename);
+        return;
+    }
+    for (int i = 0; i < num_parts; i++)
+    {
+        fprintf(fp, "%d,%s,%d\n", stu[i].number, stu[i].name, stu[i].score);
+    }
+    fclose(fp);
+    printf("保存%d 成功", num_parts);
+}
+
+//排序
+void sort_data(void)
+{
+    printf("排序\n");
+    for (int i = 0; i < num_parts; i++)
+    {
+        int change = 0;
+        static struct students t;
+        for (int j = 0; j < num_parts - i - 1; j++)
+        {
+            if (stu[j].number > stu[j + 1].number)
+            {
+                t = stu[j + 1];
+                stu[j + 1] = stu[j];
+                stu[j] = t;
+                change = 1;
+            }
+        }
+        if (!change)
+            break;
+    }
+    for (int i = 0; i < num_parts; i++)
+    {
+        int change = 0;
+        static struct students t;
+        for (int j = 0; j < num_parts - i - 1; j++)
+        {
+            if (stu[j].score > stu[j + 1].score)
+            {
+                t = stu[j + 1];
+                stu[j + 1] = stu[j];
+                stu[j] = t;
+                change = 1;
+            }
+        }
+        if (!change)
+            break;
+    }
+    printf("排序已完成");
+}
+
+void make_chart(void)
+{
+    printf("NUMBER  |  NAME                score\n");
+    for (int i = 0; i < num_parts; i++)
+    {
+        printf("%d  |  %s ", stu[i].number, stu[i].name);
+        for (int j = 0; j < stu[i].score; j++)
+        {
+            printf("*");
+        }
+        printf("\n");
+    }
+    printf("图表\n");
+}
+
+int confirm(const char *msg)
+{
+    char c = 'n';                // 默认选择是 no
+    printf("%s(Y/N): ", msg);    // 提示输入 yes/no 进行确认
+    scanf(" %c%*[^\n]", &c);     // 读取第一个字符，忽略剩余字符
+    return c == 'y' || c == 'Y'; // 返回确认结果
+}
\ No newline at end of file