学生成绩管理系统源代码.docx

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <windows.h>
struct student //构造体定义
{
int num;
char name[10];
char birthday[10];
int Cyuyan;
int shujujiegou;
struct student *next;
};

struct student *creat_by_input();
struct student *get_last_student(struct student *head);
struct student *Print_menu_main() //主菜单
{
printf(" *********************************************************************\n");
printf(" | 1.........输入学生信息 | \n");
printf(" | 2.........输出学生信息 | \n");
printf(" | 3.........查找学生信息 | \n");
printf(" | 4.........修改学生信息 | \n");
printf(" | 5.........插入学生信息 | \n");
printf(" | 6.........删除学生信息 | \n");
printf(" | 7.........排序学生信息 | \n");
printf(" | 0.........退出系统 | \n");
printf(" |_ _ _ _ _ _ _ _ _ _ _ _ _ | \n");
}
struct student *print_table_head()
{
printf("+----------+----------+----------+----------+-------------+\n");
printf("| 学号 | 姓名 | 出生日期 | c成绩 |数据构造成绩 |\n");
printf("+----------+----------+----------+----------+-------------+\n");
}

struct student *print_table_row(struct student *p)
{
printf("|%10d|%10s|%10s|%10d|%10d|\n",p->num,p->name,p->birthday,p->Cyuyan,p->shujujiegou);
}

void print_table_bottom()
{
printf("+----------+----------+----------+----------+-------------+\n");
}

struct student * Creat_stu_record() //建立链表
{
struct student *plaststu=NULL,*pnewstu;
char continue_input='N';
struct student *head=NULL;
while(1)
{
if(head==NULL)
{
head=creat_by_input();
print_table_head();
print_table_row(head);
print_table_bottom();
}
else
{
pnewstu=creat_by_input();
print_table_head();
print_table_row(pnewstu);
print_table_bottom();
plaststu=get_last_student(head);
plaststu->next=pnewstu;}
printf("是否继续输入学生信息？(Y 继续，N 返回菜单)\n");
getchar();
continue_input=getchar();
if(continue_input=='n'||continue_input=='N')
{
system("cls");
Print_menu_main();
break;
}
}
return head;
}
struct student *creat_by_input()
{
struct student *pnewstu=(struct student *)malloc(sizeof(struct student));
printf("请输入学生信息\n");
printf("学号:");scanf("%d",&pnewstu->num);
printf("姓名:");scanf("%s",pnewstu->name);
printf("出生年月:");scanf("%s",pnewstu->birthday);
printf("请输入学生成绩\n");
printf("C语言:");scanf("%d",&(pnewstu->Cyuyan));
printf("数据构造:");scanf("%d",&(pnewstu->shujujiegou));
pnewstu->next=NULL;
return pnewstu;
}
struct student *get_last_student(struct student *p )
{
if(p->next==NULL)
return p;
else
return get_last_student(p->next);
}

void Print_Stu_Doc(struct student *head)
{
struct student *p;
char r;
print_table_head();
if(head==NULL)
{
printf("\n No Records\n");
}
for(p=head;p;p=p->next)
{
printf("|%10d|%10s|%10s|%10d|%10d|\n",p->num,p->name,p->birthday,p->Cyuyan,p->shujujiegou);
printf("+----------+----------+----------+----------+-------------+\n");}
printf("(按Enter键返回主菜单)\n");
getchar();
r=getchar();
if(r!='1')
{
system("cls");
Print_menu_main();
}
else
{
system("cls");
Print_menu_main();
}
}

struct student *search_by_name(struct student *head)//按姓名查找
{
char name[10];
struct student *p=head;
char continue_input;
/*int isfound=0;*/
printf("请输入要查找的姓名：");
scanf("%s",name);
printf("查找%s\n",name);
print_table_head();
while(p!=NULL)
{
if(strcmp(p->name,name)==0)
{
print_table_row(p);
p=p->next;
/* isfound=1; */
break;
}
p=p->next;
}
print_table_bottom();
printf("是否继续查找(Y 继续；N 返回主菜单)\n");
getchar();
continue_input=getchar();
if(continue_input=='n'||continue_input=='N')
{
system("cls");
Print_menu_main();
}
else
search_by_name(head);

}

struct student * search_by_id(struct student *head)//按学号查找
{
int id;
struct student *p=head;
char continue_input;
/*int isfound=0;*/

printf("请输入要查找的学号：");
scanf("%d",&id);
printf("查找%d\n",id);
print_table_head();
while(p!=NULL)
{
if(p->num==id)
{
print_table_row(p);
p=p->next;
/*isfound=1;*/
break;
}
p=p->next;
}
print_table_bottom();
printf("是否继续查找？(Y 继续；N 返回主菜单)\n");
getchar();
continue_input=getchar();
if(continue_input=='n'||continue_input=='N')
{
system("cls");
Print_menu_main();
}
else
search_by_id(head);
return head;
}

struct student*modify_record_by_id(struct student*head)//按学号修改
{
struct student *p=head;
int id;
char continue_input;
printf("请输入要修改的学生的学号：\n");
scanf("%d",&id);
while(p!=NULL)
{
if(p->num==id)
break;
p=p->next;
}
if(p==NULL)
printf("抱歉，没有学号为%d的学生\n",id);
else
{
printf("请输入学生信息:\n");
printf("学号:");scanf("%d",&(p->num));
printf("姓名:");scanf("%s",&(p->name));
printf("出生年月:");scanf("%s",&(p->birthday));
printf("请输入学生成绩：\n");
printf("C语言:");scanf("%d",&(p->Cyuyan));
printf("数据构造:");scanf("%d",&(p->shujujiegou));
print_table_head();print_table_row(p);print_table_bottom();}
printf("继续修改学生信息吗Y 继续；N 返回主菜单\n");
getchar();
continue_input=getchar();
if(continue_input=='y'||continue_input=='Y')
creat_by_input();
else
{
system("cls");
Print_menu_main();
}
return head;
}

struct student*modify_record_by_name(struct student*head)//按姓名修改
{
struct student*p=head;
char name[10];
char continue_input;
printf("请输入要修改的学生的姓名：\n");
scanf("%s",name);
while(p!=NULL)
{
if(strcmp(p->name,name)==0)
break;
p=p->next;
}
if(p==NULL)
printf("抱歉，没有姓名为%s的学生\n",name);
else
{
printf("请输入学生信息:\n");
printf("学号:");scanf("%d",&(p->num));
printf("姓名:");scanf("%s",&(p->name));
printf("出生年月:");scanf("%s",&(p->birthday));
printf("请输入学生成绩：\n");
printf("C语言:");scanf("%d",&(p->Cyuyan));
printf("数据构造:");scanf("%d",&(p->shujujiegou));
print_table_head();print_table_row(p);print_table_bottom();}
printf("继续修改学生信息吗Y 继续；N 返回主菜单\n");
getchar();
continue_input=getchar();
if(continue_input=='y'||continue_input=='Y')
creat_by_input();
else
{
system("cls");
Print_menu_main();
}
return head;
}

struct student *insert_record(struct student *head)//插入
{
struct student *ptr1;
struct student *ptr,*stud;
struct student *ptr2=head;
char continue_input='N';
int id;
printf("请输入一个学号，在此之前插入学生信息:");
scanf("%d",&id);
stud=creat_by_input();
ptr=stud;
if(head==NULL)
{
head=ptr;head->next=NULL;
}
else if(head->num==id)
{
ptr->next=head;
head=ptr;
}
else
{
while(ptr2!=NULL)
{
ptr1=ptr2;
ptr2=ptr1->next;
if(ptr2->num==id)
{
ptr1->next=ptr;
ptr->next=ptr2;
break;
}
}
}

print_table_head();
print_table_row(ptr);
print_table_bottom();
printf("是否继续插入学生信息(Y 继续 N 返回主菜单)\n");
getchar();
continue_input=getchar();
if(continue_input=='y'||continue_input=='Y')
return insert_record(head);
else
{
system("cls");
Print_menu_main();
return head;
}

}

struct student *Delete_record_by_id( struct student *head)//按学号删除
{
struct student *p=head,*ppre=NULL;
int id;
char continue_input;
printf("请输入要删除的学号:");
scanf("%d",&id);
while(p!=NULL)
{
if(p->num==id)
break;
p=p->next;
}
if(p==NULL)
printf("抱歉，没有该学号的学生信息！\n");
else
{
printf("确定要删除学号为%d的学生的信息吗？〔Y 确定；N 返回主菜单〕\n",p->num);
getchar();
continue_input=getchar();
if(continue_input=='y'||continue_input=='Y')
{
ppre=head;
if(ppre==p)
{
head=p->next;
printf(" \n");
free(p);
}
else
{
while(ppre!=NULL)
{
if(ppre->next==p)
{
ppre->next=p->next;
free(p);
break;
}
ppre=ppre->next;
}
}
printf("删除成功！");
}
// Print_menu_main();
}
printf("继续删除学生信息吗？(Y 继续；N 返回主菜单)");
getchar();
continue_input=getchar();
if(continue_input=='y'||continue_input=='Y')
Delete_record_by_id(head);
else
{
system("cls");
Print_menu_main();
return head;
}
return 0;
}
struct student *Delete_record_by_name( struct student *head)// 按姓名删除
{
struct student *p=head,*ppre=NULL;
char name[10];
char continue_input;
printf("请输入要删除的姓名:");
scanf("%s",name);
while(p!=NULL)
{
if(strcmp(p->name,name)==0) break;
p=p->next;
}
if(p==NULL)
{
printf("抱歉，没有该姓名的学生信息！\n");
goto end;
}
else
printf("确定要删除姓名为%s的学生的信息吗？〔Y 确定；N 返回主菜单〕",p->name);
printf("\n");
getchar();
continue_input=getchar();
if(continue_input=='y'||continue_input=='Y')
{
ppre=head;
if(ppre==p)
{
head=p->next;
free(p);
}
else
{
while(ppre!=NULL)
{
if(ppre->next==p)
{
ppre->next=p->next;
free(p);
break;
}
ppre=ppre->next;
}
}
printf("删除成功！");
}
//else Print_menu_main();
end: printf("继续删除学生信息吗？(Y 继续；N 返回主菜单)");
printf("\n");
getchar();
continue_input=getchar();
if(continue_input=='Y'||continue_input=='y')
Delete_record_by_name(head);
else
{
system("cls");
Print_menu_main();return head;
}
return 0;
}

struct student * Sorting_record_by_id(struct student *head)//按学号排序
{
int i=0,j,k,r;
struct student *pt1,*pt2,*pt,m;
if(head==NULL)
{
printf("现在无同学记录\n");
printf("(按Enter键返回主菜单)\n");
getchar();
r=getchar();
if(r!='1')
{
system("cls");
Print_menu_main();
}
else
{
system("cls");
Print_menu_main();
}
}
else
{
pt1=head;
pt2=head->next;
for(pt=head;pt;pt=pt->next)
i++;
for(j=1;j<i;j++)
{
pt1=head;
pt2=head->next;
for(k=1;k<i-j+1;k++)
{
if(pt1->num>pt2->num)
{
m=*pt1;
*pt1=*pt2;
*pt2=m;
pt2->next=pt1->next;
pt1->next=pt2;
}
pt1=pt2;
pt2=pt1->next;
}
}
}
print_table_head();
for(pt=head;pt;pt=pt->next)
{
printf("|%10d|%10s|%10s|%10d|%10d|\n",pt->num,pt->name,pt->birthday,pt->Cyuyan,pt->shujujiegou);
printf("+----------+----------+----------+----------+----------+\n");}
return head;
}

int main()
{
struct student *head=NULL;
struct student *p;
int choice;int select;char m;char r;
system("color e");
printf(" \n");
printf(" \n");

printf(" 欢送使用学生成绩管理系统！ \n");
printf(" \n");

printf("^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n");
printf(" \n");
printf("...............................................................................\n");
printf("请按照提示信息完成操作\n");
Print_menu_main();
printf(" \n");
printf(":::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
printf(" \n");

printf("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\n");

while(choice!=0)
{
printf("请选择所要执行的操作：\n");
start: if(scanf("%d",&choice))
{
if(choice>7||choice<0)
{
printf("请输入0到7的数字,选择所要执行的操作：\n");
goto start;
}
else
goto next;
}
if(scanf("%c",&m))
{
printf("请输入0到7的数字,选择所要执行的操作：\n");
goto start;
}

next: switch(choice)
{
case 1:system("cls");head=Creat_stu_record();
break;
case 2:system("cls");Print_Stu_Doc(head);
break;
case 3:system("cls");
printf("请选择查找方式：1 按姓名查找； 2 按学号查找；3 返回主菜单");
printf("\n");
scanf("%d",&select);
switch(select)
{
case 1:search_by_name(head);break;
case 2:search_by_id(head);break;
case 3:system("cls");Print_menu_main();break;
};break;
case 4:system("cls");printf("请输入修改方式：1 按学号修改；2 按姓名修改; 3 返回主菜单");
printf("\n");
scanf("%d",&select);
switch(select)
{
case 1:system("cls");modify_record_by_id(head);break;
case 2:system("cls");modify_record_by_name(head);break;
case 3:system("cls");Print_menu_main();break;
}
break;
case 5:system("cls");head=insert_record(head);break;
case 6:system("cls");
printf("请输入删除方式：1 按学号删除；2 按姓名删除; 3 返回主菜单\n");
scanf("%d",&select);
switch(select)
{
case 1:head=Delete_record_by_id(head);break;
case 2:head=Delete_record_by_name(head);break;
case 3:Print_menu_main();break;
}
break;
case 7:system("cls");
Sorting_record_by_id(head);
printf("(按Enter键返回主菜单)\n");
getchar();
r=getchar();
if(r!='1')
{
system("cls");
Print_menu_main();
}
else
{
system("cls");
Print_menu_main();
}
break;
break;
case 0:system("cls");
printf(" \n");
printf("------------------------------------------------------------\n");
printf(" ^-^ ^-^ ^-^ ^-^ ^-^ 谢谢使用 ^-^ ^-^ ^-^ ^-^ ^-^！\n");
printf(" \n");
break;
}
}
}