diff --git a/zdf1.c b/zdf1.c
new file mode 100644
index 0000000..e0d666c
--- /dev/null
+++ b/zdf1.c
@@ -0,0 +1,401 @@
+#include<stdbool.h>
+#include<limits.h>
+#include<math.h>
+#include<stdlib.h>
+#include<conio.h>
+#include<Windows.h>
+#include<stdio.h>
+#include<string.h>
+
+
+
+unsigned int counts = 0;
+
+
+
+/*结构体定义*/
+typedef struct student {
+	char no[21];
+	char name[11];
+	bool fame;
+	unsigned short int age;
+	char oth[151];
+	struct student * next;
+}student;
+
+struct student * first = NULL;//第一个
+struct student * loc = NULL;//当前(一般为NULL)
+
+void input(void);//输入
+void print(void);//打印所有
+void print_1(const student *);//打印单个
+void creat(const student);//创造单个
+void save(void);//全部保存
+void search_by_sex(bool);//按性别搜索
+void search_by_age(unsigned short int);//按年龄搜索
+void show_menu(void);//显示菜单
+void exith(void);//退出(清理程序内容)
+int main() {
+	run();
+	system("pause");
+	return 0;
+}
+void show_menu(void) {
+	printf("a.学生基本信息录入\n");
+	printf("b.学生基本信息显示\n");
+	printf("c.学生基本信息保存\n");
+	printf("d.学生基本信息删除\n");
+	printf("e.学生基本信息修改\n");
+	printf("f.学生基本信息查询\n");
+	printf("g.退出系统\n");
+	char t = getch();
+	switch (t) {
+		case 'a':
+			input();
+			show_menu();
+			break;
+		case 'b':
+			system("cls");
+			print();
+			system("pause");
+			system("cls");
+			show_menu();
+			break;
+		case 'c':
+			save();
+			system("cls");
+			printf("保存完成!\n");
+			show_menu();
+			break;
+		case 'd':
+		{
+			char no_t[21];
+			system("cls");
+			print();
+			printf("\n请输入要删除的学生的学号:\n");
+			while (1) {
+				fgets_nn(no_t, 21, stdin);
+				if (!strcmp(no_t, "\0")) {
+					printf("学号不能为空:\n");
+					continue;
+				}
+				break;
+			}
+			if (del(no_t)) {
+				system("cls");
+				printf("删除成功!\n\n");
+			}
+			else {
+				system("cls");
+				printf("删除失败!不存在该学号的学生!\n\n");
+			}
+			show_menu();
+			break;
+		}
+		case 'e':
+		{
+			char no_t[21];
+			system("cls");
+			if (!check_password()) {
+				system("cls");
+				printf("密码验证失败!\n");
+				show_menu();
+			}
+			system("cls");
+			print();
+			printf("\n请输入要修改的学生的学号:\n");
+			while (1) {
+				fgets_nn(no_t, 21, stdin);
+				if (!strcmp(no_t, "\0")) {
+					printf("学号不能为空:\n");
+					continue;
+				}
+				break;
+			}
+			if (edit(no_t)) {
+				system("cls");
+				printf("修改成功!\n\n");
+			}
+			else {
+				system("cls");
+				printf("修改失败!不存在该学号的学生\n\n");
+			}
+			show_menu();
+			break;
+		}
+		case 'f':
+		{
+			system("cls");
+			char mod;
+			while (1) {
+				printf("请输入模式:\n");
+				printf("(1)按学号查询\n");
+				printf("(2)按姓名查询\n");
+				printf("(3)按性别查询\n");
+				printf("(4)按年龄查询\n");
+				mod = getch();
+				if (mod - '0' < 1 || mod - '0'>4) {
+					system("cls");
+					printf("输入错误\n\n");
+					continue;
+				}
+				system("cls");
+				break;
+			}
+			switch (mod - '0') {
+				case 1:
+				{//建立一个块,防止case内定义被编译器报错
+					char tem[21];
+					printf("\n请输入要查询的学生的学号:\n");
+					while (1) {
+						fgets_nn(tem, 21, stdin);
+						if (!strcmp(tem, "\0")) {
+							system("cls");
+							printf("学号不能为空,请输入要查询的学生的学号:\n");
+							continue;
+						}
+						break;
+					}
+					/*student *ge = search_by_no(tem);
+					if (ge == NULL) {
+						printf("不存在该学号的学生!请检查输入的内容!\n");
+					}
+					else {
+						system("cls");
+						printf("查询到学号为%s的学生如下:\n\n", tem);
+						print_1(ge);
+					}
+					break;
+				}*/
+				case 2:
+				{
+					char name[11];
+					printf("请输入学生姓名:\n");
+					do {
+						fgets_nn(name, 11, stdin);
+					} while (!strcmp(name, "\0"));
+					search_by_name(name);
+					break;
+				}
+				case 3:
+				{
+					bool fame;
+					while (1) {
+						printf("请输入学生性别(1.男  2.女):\n");
+						char t = getch();
+						if (t == '1') {
+							fame = true;
+							break;
+						}
+						else if (t == '2') {
+							fame = false;
+							break;
+						}
+						else {
+							system("cls");
+							printf("输入不正确,请重新输入学生性别(1.男  2.女):\n");
+							continue;
+						}
+					}
+					search_by_sex(fame);
+					break;
+				}
+				case 4:
+				{
+					unsigned short int age;
+					while (1) {
+						printf("请输入学生年龄:\n");
+						if (scanf("%hd", &age) != 1) {
+							system("cls");
+							printf("输入不正确,请重新输入学生年龄:\n");
+							while (getchar() != '\n')continue;
+							continue;
+						}
+						break;
+					}
+					search_by_age(age);
+					break;
+				}
+			}
+			system("pause");
+			system("cls");
+			show_menu();
+			break;
+		}
+		case 'g':
+			save();
+			system("cls");
+			printf("数据已保存,正在退出系统!\n");
+			exith();
+			break;
+		default:
+			system("cls");
+			printf("输入错误!\n\n");
+			show_menu();
+			break;
+	}
+}
+void input(void) {
+	student temp;
+	char t;
+	while (1) {
+		system("cls");
+		printf("请输入学生学号,退出输入请直接回车:\n");
+		while (1) {
+			fgets_nn(temp.no, 21, stdin);
+			if (!check_no(temp.no))
+				printf("学号已存在!\n");
+			else
+				break;
+		}
+		if (!strcmp(temp.no, "\0")) {
+			return;
+		}
+		printf("请输入学生姓名:\n");
+		do {
+			fgets_nn(temp.name, 11, stdin);
+		} while (!strcmp(temp.name, "\0"));
+		while (1) {
+			printf("请输入学生性别(1.男  2.女):\n");
+			t = getch();
+			if (t == '1') {
+				temp.fame = true;
+				printf("男\n");
+				break;
+			}
+			else if (t == '2') {
+				temp.fame = false;
+				printf("女\n");
+				break;
+			}
+			else {
+				printf("输入不正确\n");
+				continue;
+			}
+		}
+		while (1) {
+			printf("请输入学生年龄:\n");
+			if (scanf("%hd", &temp.age) != 1) {
+				printf("输入不正确\n");
+				while (getchar() != '\n')continue;
+				continue;
+			}
+			break;
+		}
+		printf("备注:\n");
+		while (getchar() != '\n')continue;
+		fgets_nn(temp.oth, 151, stdin); 
+		creat(temp);
+		system("pause");
+		counts++;
+		save();
+	}
+
+}
+void creat(const student t) {
+	if (first == NULL) {
+		first = (student*)malloc(sizeof(student));
+		loc = first;
+		first->next = NULL;
+	}
+	else {
+		loc->next= (student*)malloc(sizeof(student));
+		loc = loc->next;
+		loc->next = NULL;
+	}
+	loc->age = t.age;
+	loc->fame = t.fame;
+	int i=0;
+	for(i=0;i<11&&t.name[i>0?i-1:0]!='\0';i++)
+	loc->name[i] = t.name[i];
+	for (i = 0; i < 21&&t.no[i > 0 ? i - 1 : 0] != '\0'; i++)
+	loc->no[i] = t.no[i];
+	for (i = 0; i < 151; i++)
+	loc->oth[i] = t.oth[i];
+}
+
+void print(void) {
+	student * l = first;
+	printf("系统内共有%d名学生数据:\n\n", counts);
+	while (l != NULL) {
+		print_1(l);
+		printf("\n");
+		l = l->next;
+	}
+}
+
+void print_1(const student * t) {
+	printf("学号:%s\n", t->no);
+	printf("姓名:%s\n", t->name);
+	printf("性别:%s\n", t->fame ? "男": "女");
+	printf("年龄:%d\n", t->age);
+	printf("备注:%s\n", t->oth);
+}
+
+void exith(void) {
+	student *l = first;
+	student n;
+	while (l != NULL) {
+		n = *l;
+		free(l);
+		l = n.next;
+	}
+	printf("系统已退出!\n");
+	system("pause");
+	exit(1);
+}
+void save(void) {
+	FILE * data;
+	data = fopen("data", "w");
+	student * l = first;
+	while (l != NULL) {
+		fprintf(data, "%s\n", l->no);
+		fprintf(data, "%s\n", l->name);
+		fprintf(data, "%d\n", l->fame);
+		fprintf(data, "%d\n", l->age);
+		fprintf(data, "%s\n", l->oth);
+		l = l->next;
+	}
+	fclose(data);
+}
+void search_by_sex(bool fame) {
+	student *l = first;
+	unsigned int c = 0;
+	system("cls");
+	while (l != NULL) {
+		if (l->fame == fame) {
+			print_1(l); 
+			printf("\n");
+			c++;
+		}
+			l = l->next;
+	}
+	if (c == 0) {
+		printf("未检索到内容!\n");
+	}
+	else {
+		printf("\n已检索到%d条性别为%s的学生\n\n", c, fame ? "男" : "女");
+	}
+}
+void search_by_age(unsigned short int age) {
+	student *l = first;
+	unsigned int c = 0;
+	system("cls");
+	while (l != NULL) {
+		if (l->age == age) {
+			print_1(l);
+			printf("\n");
+			c++;
+		}
+		l = l->next;
+	}
+	if (c == 0) {
+		printf("未检索到内容!\n");
+	}
+	else {
+		printf("\n已检索到%d条年龄为%d的学生\n\n", c, age);
+	}
+}
+}
+
+