C语言实现学生信息管理系统(单链表)

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/*copyright(c)2016.烟台大学计算机学院

* All rights reserved,

* 文件名称:text.Cpp

* 作者:吴敬超

* 完成日期:2016年7月1日

* 版本号:codeblock

*

* 问题描述: 学生信息管理系统

* 输入描述:

* 程序输出: 输出结果

*/

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <windows.h>

#include <time.h>

# define LEN sizeof(struct Student)

struct Student {

char num[100]; //学号

char name[200]; //姓名

char sex[100]; //性别

int age; //年龄

char phone[120]; //电话

char address[120]; //地址

char birthday[200]; //生日

char mail[200] ; //邮件

struct Student *next;

};

void menu();

void start();

void welcome();

char filename[30];//全局变量,用来保存要打开的文件名字

struct Student *Creat(int n);

//生成链表

struct Student *Creat(int n)

{

void menu_print_in(void);

struct Student *head;

struct Student *p1, *p2;

system("cls");

for(int i=1;i<n+1;i++) {

p1 = (struct Student*)malloc(LEN);

menu_print_in();

scanf("%s%s%s%d%s%s%s%s",p1->num,p1->name,p1->sex,

&p1->age,p1->phone,p1->address,p1->birthday,p1->mail);

p1->next = NULL;

if(i==1)

{

head = p2 = p1;

}

else {

p2->next = p1;

p2 = p1;

}

}

return(head);

}

//数据存盘(wb只写)

void WriteData_wb(struct Student *head) {

FILE *fp;

struct Student *p;

if((fp = fopen(filename, "wb"))==NULL)

printf("\a 文件打开错误");

p = head;

while(p!=NULL) {

if(fwrite(p,LEN,1,fp)!=1) {

printf("写入数据出错\n");

fclose(fp);

return;

}

p=p->next;

}

fclose(fp);

}

//数据存盘(ab追加)

void WriteData_ab(struct Student *head)

{

FILE *fp;

struct Student *p;

if((fp = fopen(filename, "ab"))==NULL)

printf("\a 文件打开错误!");

p = head;

while(p!=NULL) {

if(fwrite(p,LEN,1,fp)!=1) {

printf("写入数据出错\n");

fclose(fp);

return;

}

p=p->next;

}

fclose(fp);

}

//读取数据文件保存到链表中 ,返回指向此链表头指针

struct Student *ReadData(void)

{

struct Student *head = NULL;

struct Student *p1, *p2;//s = p1;p = p2;

FILE *fp;

if((fp=fopen(filename,"rb+"))==NULL)

{

printf("打开文件出错\n");

exit(0);

}

while(!feof(fp)) {

if((p1=(struct Student*)malloc(LEN))==NULL){

printf("内存申请出错\n");

fclose(fp);

exit(0);

}

if(fread(p1,LEN,1,fp)!=1){

free(p1);

break;

}

if(head==NULL)

head=p2=p1;

else{

p2->next=p1;

p2=p1;

}

}

fclose(fp);

return (head);

}

//全部查询

void display()

{

system("cls");

void menu_print_out(void);

struct Student *p;

p = ReadData();

menu_print_out();

do

{

printf("%-10s%6s%8s%4d%13s%11s %4s %4s",p->num,p->name,p->sex,

p->age,p->phone,p->address,p->birthday,p->mail);

p = p->next;

printf("\n\n");

}while(p!=NULL);

printf("\n\n");

}

//学号查询

int query_num()

{

system("cls");

void menu_print_out();

struct Student *p;

char str_num[10];

printf("请输入您要查询的学号:");

scanf("%s", str_num);

p = ReadData();

menu_print_out();

do {

if(strcmp(p->num,str_num)==0) {

printf("%-10s%6s%8s%4d%13s%11s %4s %4s",p->num,p->name,p->sex,

p->age,p->phone,p->address,p->birthday,p->mail);

printf("\n\n");

return 0;

}

p = p->next;

}while(p!=NULL);

printf("数据库中没有存储您要查询的数据!\n");

printf("\n\n");

return 0;

}

//姓名查询

int query_name()

{

system("cls");

void menu_print_out(void);

struct Student *p;

char str_name[20];

printf("请输入您要查询的姓名:");

scanf("%s", str_name);

p = ReadData();

menu_print_out();

do {

if(strcmp(p->name,str_name)==0)

{

printf("%-8s%6s%8s%4d%13s%11s %4s %4s",p->num,p->name,p->sex,

p->age,p->phone,p->address,p->birthday,p->mail);

printf("\n\n");

return 0;

}

p = p->next;

}while(p!=NULL);

printf("数据库中没有存储您要查询的数据!\n");

printf("\n\n");

return 0;

}

//【1】修改数据之删除记录

int delStudent()

{

struct Student *p1, *p2, *head;

char str_num[20];

printf("\n请输入您要删除的学号信息:");

scanf("%s", str_num);

p1 = ReadData();

p2 = p1->next;

head = p1;

while(p2!=NULL)

{

if(strcmp(p1->num,str_num)==0) {

WriteData_wb(p2);

}

else if(strcmp(p2->num,str_num)==0) {

p1->next = p2->next;

WriteData_wb(head);

}

p2 = p2->next;

p1 = p1->next;

}

if(p2!=NULL)

printf("数据库中没有存储您要删除的数据!\n");

printf("\n\n");

return 0;

}

//【2】修改数据之修改记录

int change1()

{

void menu_print_in(void);

struct Student *p1, *p2, *head;

char str_num[20];

printf("请输入您要修改的学号信息:");

scanf("%s", str_num);

p1 = ReadData();

p2 = p1->next;

head = p1;

while(p2!=NULL)

{

if(strcmp(p1->num,str_num)==0) {

menu_print_in();

scanf("%s%s%s%d%s%s%s%s",p1->num,p1->name,p1->sex,

&p1->age,p1->phone,p1->address,p1->birthday,p1->mail);

WriteData_wb(head);

}

else if(strcmp(p2->num,str_num)==0)

{

menu_print_in();

scanf("%s%s%s%d%s%s%s%s",p2->num,p2->name,p2->sex,

&p2->age,p2->phone,p2->address,p2->birthday,p2->mail);

WriteData_wb(head);

}

p2 = p2->next;

p1 = p1->next;

}

if(p2!=NULL)

printf("数据库中没有存储您要删除的数据!\n");

return 0;

}

void start() //欢迎界面

{

system("color 1E");

printf("\n\n\n\n\n\n\n\n\n\t\t\t⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙\n");

printf("\t\t\t⊙ ⊙\n");

printf("\t\t\t⊙ 欢迎使用学生信息管理系统 ⊙\n");

printf("\t\t\t⊙ ⊙\n");

printf("\t\t\t⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙\n");

printf("\n\t\t\t\t系统开始启动.........\n");

printf("===============================================================================\r");

for(int i=1;i<80;i++)

{

Sleep(40);

printf(">");

}

system("CLS");

welcome();

}

void welcome()//登录界面

{

system("CLS");

system("color 2");

printf("\n\n\n\n\n\n\t\t\t★★★★★★★★★★★★★★★★\n");

printf("\t\t\t★ ★\n");

printf("\t\t\t★ 欢迎使用学生信息管理系统 ★\n");

printf("\t\t\t★ ★\n");

printf("\t\t\t★ 设计者:吴敬超 ★\n");

printf("\t\t\t★ ★\n");

printf("\t\t\t★ 日期:2016.7.1 ★\n");

printf("\t\t\t★ ★\n");

printf("\t\t\t★★★★★★★★★★★★★★★★\n");

printf("\n\t\t\t按任意键继续...");

getchar();

system("CLS");

menu();

}

//主菜单

void menu()

{

void addStudent();

void query();

int File_name();

void change();

system("CLS");

system("color D");

printf("\t\t\t★★★★★★主菜单※※※※※\n");

printf("\n\n\n\n\n\t\t\t※※※※※※※※※※※※※※\n");

printf("\t\t\t※ ※\n");

printf("\t\t\t※ 1.录入学生信息 ※\n");

printf("\t\t\t※------------------------※\n");

printf("\t\t\t※ 2.查询学生信息 ※\n");

printf("\t\t\t※------------------------※\n");

printf("\t\t\t※ 3.修改学生信息 ※\n");

printf("\t\t\t※------------------------※\n");

printf("\t\t\t※ 4. 退出系统 ※\n");

printf("\t\t\t※------------------------※\n");

printf("\t\t\t※※※※※※※※※※※※※※\n");

printf("\n\t\t请输入功能前的序号选择服务项目:");

int a = 0;

a = getchar();

while(a!='1'&&a!='2'&&a!='3'&&a!='4') {

printf("错误,请输入正确的号码!\n");

putchar('\a');

getchar();

printf("\n\t\t请输入功能前的序号选择服务项目:");

a = getchar();

}

switch(a) {

case '1': File_name();addStudent();

break;

case '2': File_name();query();

break;

case '3': File_name();change();

break;

case '4': exit(0);

break;

}

getchar();

}

int File_name()

{

printf("\n\t\t请输入您要打开的文件:");

if(scanf("%s", filename)!=1)

printf("\a error!");

return 0;

}

//二级菜单之添加数据

void addStudent()

{

int Creat_num();

system("cls");

getchar();

system("CLS");

system("color B");

printf("\t\t\t★★★★★★添加数据※※※※※\n");

printf("\n\n\n\n\n\t\t\t※※※※※※※※※※※※※\n");

printf("\t\t\t※ ※\n");

printf("\t\t\t※ 1. 新建文件 ※\n");

printf("\t\t\t※----------------------※\n");

printf("\t\t\t※ 2. 增添数据 ※\n");

printf("\t\t\t※----------------------※\n");

printf("\t\t\t※ 3. 返回菜单 ※\n");

printf("\t\t\t※----------------------※\n");

printf("\t\t\t※※※※※※※※※※※※※\n");

printf("\n\t\t请输入功能前的序号选择服务项目:");

int a = 0;

a = getchar();

while(a!='1'&&a!='2'&&a!='3')

{

printf("错误,请输入正确的号码!\n");

putchar('\a');

getchar();

printf("\n\t\t请输入功能前的序号选择服务项目:");

a = getchar();

}

switch(a) {

case '1': WriteData_wb(Creat(Creat_num()));

printf("\n新建文件成功且数据已成功保存\n");

system("pause");

system("cls");

addStudent();

break;

case '2': WriteData_ab(Creat(Creat_num()));

printf("\n数据已成功添加\n");

system("pause");

system("cls");

addStudent();

break;

case '3': system("cls");

getchar();

menu();

break;

}

}

//二级菜单之查询数据

void query()

{

system("cls");

getchar();

while(1)

{

system("CLS");

system("color C");

printf("\t\t\t★★★★★查询数据※※※※※\n");

printf("\n\n\n\n\n\t\t\t※※※※※※※※※※※※※※\n");

printf("\t\t\t※ ※\n");

printf("\t\t\t※ 1.全部查询 ※\n");

printf("\t\t\t※------------------------※\n");

printf("\t\t\t※ 2.学号查询 ※\n");

printf("\t\t\t※------------------------※\n");

printf("\t\t\t※ 3.姓名查询 ※\n");

printf("\t\t\t※------------------------※\n");

printf("\t\t\t※ 4.返回菜单 ※\n");

printf("\t\t\t※------------------------※\n");

printf("\t\t\t※※※※※※※※※※※※※※\n");

printf("\n\t\t请输入功能前的序号选择服务项目:");

int a = 0;

a = getchar();

while(a!='1'&&a!='2'&&a!='3'&&a!='4')

{

printf("错误,请输入正确的号码!\n");

putchar('\a');

getchar();

printf("\n\t\t请输入功能前的序号选择服务项目:");

a = getchar();

}

switch(a) {

case '1': display();system("pause");getchar();

break;

case '2': query_num();system("pause");getchar();

break;

case '3': query_name();system("pause");getchar();

break;

case '4': system("cls");getchar();menu();

break;

}

}

}

int Creat_num() {

printf("\n\t\t请输入您要添加的数据个数:");

int n;

if(scanf("%d", &n)!=1) {

printf("\a error!");

}

return n;

}

//二级菜单之修改数据/

void change()

{

system("cls");

getchar();

while(1)

{

system("CLS");

system("color A");

printf("\t\t\t★★★★★★修改数据※※※※※\n");

printf("\n\n\n\n\n\t\t\t※※※※※※※※※※※※※※\n");

printf("\t\t\t※ ※\n");

printf("\t\t\t※ 1.删除记录 ※\n");

printf("\t\t\t※------------------------※\n");

printf("\t\t\t※ 2.修改记录 ※\n");

printf("\t\t\t※------------------------※\n");

printf("\t\t\t※ 3.返回菜单 ※\n");

printf("\t\t\t※------------------------※\n");

printf("\t\t\t※※※※※※※※※※※※※※\n");

printf("\n\t\t请输入功能前的序号选择服务项目:");

int a = 0;

a = getchar();

while(a!='1'&&a!='2'&&a!='3')

{

printf("错误,请输入正确的号码!\n");

putchar('\a');

getchar();

printf("\n\t\t请输入功能前的序号选择服务项目:");

a = getchar();

}

switch(a) {

case '1': delStudent();

printf("\n\n已成功删除指定数据\n");

system("pause");

getchar();

break;

case '2': change1();

printf("\n\n已成功修改指定数据\n");

system("pause");

getchar();

break;

case '3': system("cls");

getchar();

menu();

break;

}

}

}

//输入输出提示栏

void menu_print_in() {

printf("------------------------------------------------------------------------\n");

printf("学号 姓名 性别 年龄 电话 地址 生日 邮件 \n");

printf("------------------------------------------------------------------------\n");

}

void menu_print_out(void) {

printf("--------------------------------------------------------------------------\n");

printf("学号 姓名 性别 年龄 电话 地址 生日 邮件 \n");

printf("--------------------------------------------------------------------------\n");

}

//主函数

int main()

{

start();

return 0;

}

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