课程设计--学生信息管理系统

* Copyright (c++) 2015 烟台大学计算机学院
* All right reserved.
* 文件名称：houzhui.cpp
* 作    者: 商文轲
* 完成日期：2015年12月25日
* 版 本 号：v1.9

#include "stdio.h"
#include "stdlib.h"
#include "string.h"
# include "conio.h"
# define N sizeof(struct student)   //测结构体变量的大小//

typedef struct student
{
char number[20];
char name[20];
char sex[20];
char Tel[20];
char college[20];
char add[20];
int score;//高考成绩
struct student *next;
} stu;  //为结构体命名//

stu *creatlink( stu * &head);   //创建链表信息//
stu *delet(stu *p0);                 //删除信息//
stu *modify(stu *h);                //修改信息//
void findNum(stu *h);                      //查询信息//
void findName(stu *h);                      //查询信息//
void print(stu *p);                  //显示全部信息//
stu *sort(stu *head);      //冒泡排序
int MainMenu();
int FindMenu();
int ManageMenu();
int StudentMenu();
void findNum(stu *h);
void findName(stu *h);

#include <malloc.h>
#include "stu.h"

stu *creatlink( stu * &head)   //尾插法创建链表
{
int score;
stu *p1, *p2;
int i = 1;
char choice1;
head = p2 = (stu *)malloc(N); //p2始终指向尾节点，开始时指向头结点
head->next = NULL;
choice1 = 'y';
for (i = 1; choice1 == 'y' || choice1 == 'Y'; i++)
{
p1 = (stu *)malloc(N);
printf("*******************************************************************************\n\n");
printf("请输入第%d个学生的信息:\n", i);
printf("学号：");
scanf("%s", p1->number);
printf("\n姓名:");
scanf("%s", p1->name);
printf("\n性别:");
scanf("%s", p1->sex);
printf("\n手机号:");
scanf("%s", p1->Tel);
printf("\n学院:");
scanf("%s", p1->college);
printf("\n籍贯:");
scanf("%s", p1->add);
printf("\n高考成绩:");

scanf("%d", &score);
p1->score= score;
p2->next = p1;   // 将*p1插入*p2后
p2 = p1;
printf("\n是否继续?(Y/N):");
choice1 = getch();
printf("\n");
}
p2->next = NULL;
return(head);
}

stu *delet(stu  *head)                 //删除信息
{
char num[20];
stu *p=head ,*q ;
char choice2;

printf("\n请输入要删除学生的学号：");
scanf("%s", num);

while (strcmp(p->number, num) != 0&& p!= NULL )  //找到要删除的学生的信息
{
p= p->next;

}

if(p==NULL)       //未找到该信息

{
printf("输入错误:\n");
printf("\n按任意键结束!");
getch();
}
else
{
q=p->next;

printf("你要删除的信息如下,请确认是否删除:\n");
printf("\n学号:%s 姓名:%s 性别:%s 手机号:%s 学院:%s 籍贯:%s\n\n", q->number, q->name, q->sex, q->Tel, q->college, q->add);
printf("\n是Y,否N:");   //显示要删除的学生的信息//
choice2 = getch();
if (choice2 == 'Y' || choice2 == 'y')
{
p->next = q->next;
free(q);
printf("\n删除成功!");
}
printf("\n按任意键结束!");
getch();
return  head;
}

}

stu *modify(stu *h)                //修改信息
{
int score;
char num[20];
stu *p;
char choice;
printf("\n请输入要修改学生信息的学号：");
scanf("%s", num);
for (p = h; strcmp(p->number, num) != 0; p = p->next);   //找到要删除的学生的信息
while (1)
{
printf("请输入修改后学生的信息：\n");
printf("学号：");
scanf("%s", p->number);
printf("\n姓名:");
scanf("%s", p->name);
printf("\n性别:");
scanf("%s", p->sex);
printf("\n手机号:");
scanf("%s", p->Tel);
printf("\n学院:");
scanf("%s", p->college);
printf("\n籍贯:");
scanf("%s", p->add);
printf("\n高考成绩：");
scanf("%d", &score);
p->score= score;
printf("修改后学生信息如下:\n");
printf("\n学号:%s 姓名:%s 性别:%s 手机号:%s 学院:%s 籍贯:%s 高考成绩:%d\n\n", p->number, p->name, p->sex, p->Tel, p->college, p->add,p->score);
printf("\n确认?是Y否N:");
choice = getch();
if (choice == 'y' || choice == 'Y') break;
}
printf("\n修改成功,按任意键继续!");
getch();
return h;
}

void findNum(stu *h)                      //按学号查询信息
{
char num[20];
stu *p;
printf("\n请输入你要查找的学生的学号：");
scanf("%s", num);
for (p = h; strcmp(p->number, num) != 0; p = p->next);
printf("你查找的学生信息如下:\n");
printf("\n学号:%s 姓名:%s 性别:%s 手机号:%s 学院:%s 籍贯:%s 高考成绩：%d\n\n", p->number, p->name, p->sex, p->Tel, p->college, p->add, p->score);
printf("按任意键继续!");
getch();
}

void findName(stu *h)                      //按姓名查询信息
{
char name[20];
stu *p;
printf("\n请输入你要查找的学生的姓名：");
scanf("%s", name);
for (p = h; strcmp(p->name, name) != 0; p = p->next);
printf("你查找的学生信息如下:\n");
printf("\n学号:%s 姓名:%s 性别:%s 手机号:%s 学院:%s 籍贯:%s 高考成绩：%d\n\n", p->number, p->name, p->sex, p->Tel, p->college, p->add, p->score);
printf("按任意键继续!");
getch();
}

void print(stu *p)                  //显示全部信息
{
p=p->next;
while (p != NULL)
{
printf("\n学号%s  姓名%s  性别%s  手机号%s  college%s  籍贯%s   高考成绩%d\n", p->number, p->name, p->sex, p->Tel, p->college, p->add,p->score);
p = p->next;
}
printf("\n按任意键继续!");
getch();
}

stu *sort(stu *head)      //按高考成绩冒泡排序
{
stu* p1;
stu* p2;
char number[20];
char name[20];
char sex[20];
char Tel[20];
char college[20];
char add[20];
int  score;//高考成绩

p1 = head;
while (p1!=NULL)
{
p2 = p1->next;
while (p2!=NULL)
{
if (p2->score<p1->score)
{
//完成数值交换
strcpy(number, p2->number);
strcpy(name, p2->name);
strcpy(sex, p2->sex);
strcpy(Tel, p2->Tel);
strcpy(college, p2->college);
strcpy(add, p2->add);
score= p2->score;

strcpy(p2->number, p1->number);
strcpy(p2->name, p1->name);
strcpy(p2->sex, p1->sex);
strcpy(p2->Tel, p1->Tel);
strcpy(p2->college, p1->college);
strcpy(p2->add, p1->add);
p2->score= p1->score;

strcpy(p1->number, number);
strcpy(p1->name, name);
strcpy(p1->sex, sex);
strcpy(p1->Tel, Tel);
strcpy(p1->college, college);
strcpy(p1->add, add);
p1->score= score;
}
p2 = p2->next;//指向下一个节点
}
p1 = p1->next;//指向下一个节点
}
print(head);

printf("学生信息排序完毕，按任意键继续!");
getch();
return(head);     /*返回头指针*/
}

//============================系统主菜单==========================
int MainMenu()
{
int ok;
system("cls");
printf("=========================================================================\n");
printf("                     欢迎来到学生信息管理系统主界面!                     \n");
printf("=========================================================================\n");
printf("                                1.管理员                                 \n");
printf("                                2.学生                                   \n");
printf("                                0.退出                                   \n");
scanf("%d", &ok);
return ok;
}

//============================查询主菜单==========================
int FindMenu()
{
int ok;
system("cls");
printf("=========================================================================\n");
printf("                                1.按学号                                 \n");
printf("                                2.按姓名                                 \n");
printf("                                0.退出                                   \n");
scanf("%d", &ok);
return ok;
}

//============================管理员菜单==========================
int ManageMenu()
{
int choice;
system("cls");
printf("=========================================================================\n");
printf("                              1. 添加学生信息                            \n");
printf("                              2. 删除学生信息                            \n");
printf("                              3. 修改学生信息                            \n");
printf("                              4. 查询学生信息                            \n");
printf("                              5. 排序显示信息                            \n");
printf("                              0. 返        回                            \n");
printf("请输入你要执行的操作代码：");
scanf("%d", &choice);
return choice;
}

//============================管理员菜单==========================
int StudentMenu()
{
int choice;
system("cls");
printf("=========================================================================\n");
printf("                              1. 查询学生信息                            \n");
printf("                              0. 返        回                            \n");
printf("请输入你要执行的操作代码：");
scanf("%d", &choice);
return choice;
}

#include"stu.h"

int main()
{
int nChoose1;
int nChoose2;
int nChoose3;
int nChoose4;
int nEnd = 1;
int nEnd2 = 1;
int nEnd3 = 1;
char sName[10];
char sPassword[10];
int i;   //choice用于选择对数据执行操作,i循环,ok主界面选择//
stu *head;
head = NULL;
while (nEnd)
{
nChoose1 = MainMenu();
switch (nChoose1)
{
case 0:
nEnd = 0;
break;
case 1:
printf("=========================================================================\n");
printf("请输入账号：\n");
scanf("%s", sName);
printf("=========================================================================\n");
printf("请输入密码：\n");
scanf("%s", sPassword);
if (strcmp(sName,"admin")!=0)
{
printf("账号错误！\n");
}
else
{
if (strcmp(sPassword,"123456")!=0)
{
printf("密码错误！\n");
}
else
{
nEnd2 = 1;
while (nEnd2)
{
nChoose2 = ManageMenu();
switch (nChoose2)
{
case 1:
head = creatlink(head);
break;
case 2:
head = delet(head);
break;
case 3:
head = modify(head);
break;
case 4:
nChoose4 = FindMenu();
switch (nChoose4)
{
case 1:
findNum(head);
break;
case 2:
findName(head);
break;
default:
printf("=========================================================================\n");
printf("                                错误的选项号                             \n");
printf("=========================================================================\n");
break;
}
break;
case 5:
head = sort(head);
break;
case 0:
nEnd2 = 0;
break;
default:
printf("=========================================================================\n");
printf("                                错误的选项号                             \n");
printf("=========================================================================\n");
break;
}
}
}
}
break;
case 2:
nEnd3 = 1;
while (nEnd3)
{
nChoose3 = StudentMenu();
switch (nChoose3)
{
case 0:
nEnd3 = 0;
break;
case 1:
nChoose4 = FindMenu();
switch (nChoose4)
{
case 1:
findNum(head);
break;
case 2:
findName(head);
break;
default:
printf("=========================================================================\n");
printf("                                错误的选项号                             \n");
printf("=========================================================================\n");
break;
}
break;
default:
printf("=========================================================================\n");
printf("                                错误的选项号                             \n");
printf("=========================================================================\n");
break;
}
}
break;
default:
printf("=========================================================================\n");
printf("                                错误的选项号                             \n");
printf("=========================================================================\n");
break;
}
}
}