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929847918@qq.com 6 years ago
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机房收费系统1.0.c
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
struct time
{
int hour;
int minute;
};
struct student
{
int no;
char classno[20];
char name[20];
struct time begin,end;
struct student *next;
};
FILE *pf;
typedef struct student STU;
STU *create_student();
void end_money(STU *head);
void select_no(STU *head);
void select_classno(STU *head);
void select_name(STU *head);
void add_student(STU *head);
void delect_student(STU *head);
void change_student(STU *head);
void printf_student(STU *head);
int menu_select();
void show_all(STU *head);
void student_file(STU *head);
STU *studebt_open();
int main()
{
STU *head;
int n=1;
while(n)
{
switch(menu_select())
{
case 1:
{
system("cls");
head=create_student();
student_file(head);
printf("初始化信息成功！（信息已成功录入student文件）\n");
break;
}
case 2:
{
system("cls");
head=studebt_open();
end_money(head);
break;
}
case 3:
{
system("cls");
head=studebt_open();
select_no(head);
break;
}
case 4:
{
system("cls");
head=studebt_open();
select_classno(head);
break;
}
case 5:
{
system("cls");
head=studebt_open();
select_name(head);
break;
}
case 6:
{
system("cls");
head=studebt_open();
change_student(head);
break;
}
case 7:
{
system("cls");
head=studebt_open();
add_student(head);
break;
}
case 8:
{
system("cls");
head=studebt_open();
delect_student(head);
break;
}
case 9:
{
system("cls");
head=studebt_open();
show_all(head);
}
case 0:
{
n=0;
student_file(head);
printf("本次操作成功，已录入在案！\n");
return 0;
break;
}
}
}
system("pause");
return 0;
}
int menu_select()
{
int i;
printf("\t\t**************************************\t\t\n");
printf("1.__初始化学生信息\n");
printf("2.__结账\n");
printf("3.__按学号查询\n");
printf("4.__按班级查询\n");
printf("5.__按姓名查询\n");
printf("6.__修改学生上机档案\n");
printf("7.__增添学生信息\n");
printf("8.__删除学生信息\n");
printf("9.__显示全部上机学生信息\n");
printf("0.__退出系统\n");
printf("\t\t*****请选择想要实现的功能序号*****\t\t\n");
scanf("%d",&i);
return i;
}
STU *create_student()
{
STU *p,*head;
int no,flag=1;
char classno[20],name[20];
int i,n,begin_hour,begin_minute,end_hour,end_minute;
while(flag)
{
p=(STU*)malloc(sizeof(STU));
printf("请输入学号");
scanf("%d",&no);
printf("请输入班级");
scanf("%s",&classno);
printf("请输入姓名");
scanf("%s",&name);
printf("请输入上机时间");
scanf("%d%d",&begin_hour,&begin_minute);
printf("请输入下机时间");
scanf("%d%d",&end_hour,&end_minute);
p->next=NULL;
head->next=p;
head=p;
printf("停止输入请按0继续输入请按1\n");
scanf("%d",&flag);
}
return head;
}
void end_money(STU *head)
{
STU *p;
float m,k=0.1;
int minute,hour;
int no;
printf("请输入学号：\n");
scanf("%d",&no);
for(p=head;p;p=p->next)
{
if(no==p->no)
{
if(p->end.minute<p->begin.minute){
p->begin.hour--;
minute=p->end.minute+60-p->begin.minute;
}else{
minute=p->end.minute-p->begin.minute;
}
hour=p->begin.hour-p->end.hour;
minute=hour*60+minute;
m=minute*k;
printf("本次上机时间为%d分钟，消费金额为%f元(注：上机0.1元/分钟)\n",minute,m);
}
}
}
void select_no(STU *head)
{
STU *p;
int no;
printf("请输入学号：\n");
scanf("%d",&no);
for(p=head;p->next;p=p->next)
{
if(no==p->no)
printf("学号：%d班级：%s姓名：%s上机时间：%d:%d下机时间：%d:%d\n",p->no,p->classno,p->name,p->begin.hour,p->begin.minute,p->end.hour,p->end.minute);
}
}
void select_classno(STU *head)
{
STU *p;
char classno[20];
printf("请输入班级:\n");
scanf("%s",&classno);
for(p=head;p;p=p->next)
{
if(strcmp(classno,p->classno)==0)
printf("学号：%s班级：%s姓名：%s上机时间：%d:%d下机时间：%d:%d\n",p->no,p->classno,p->name,p->begin.hour,p->begin.minute,p->end.hour,p->end.minute);
}
}
void select_name(STU *head)
{
STU *p;
char name[20];
printf("请输入姓名:\n");
scanf("%s",&name);
for(p=head;p;p=p->next)
{
if(strcmp(name,p->name)==0)
printf("学号：%d班级：%s姓名：%s上机时间：%d:%d下机时间：%d:%d\n",p->no,p->classno,p->name,p->begin.hour,p->begin.minute,p->end.hour,p->end.minute);
}
}
void change_student(STU *head)
{
STU *p;
int no;
printf("请输入该学生的学号：\n");
scanf("%d",&no);
for(p=head;p;p=p->next)
{
if(no==p->no)
{
printf("请输入修改后的上机时间、下机时间：\n");
scanf("%d%d%d%d",&p->begin.hour,&p->begin.minute,&p->end.hour,&p->end.minute);
printf("%d%d%d%d",p->begin.hour,p->begin.minute,p->end.hour,p->end.minute);
printf("修改成功！");
}
}
}
void show_all(STU *head)
{
STU *p;
for(p=head;p;p=p->next){
printf("学号：%d班级：%s姓名：%s上机时间：%d:%d下机时间：%d:%d\n",p->no,p->classno,p->name,p->begin.hour,p->begin.minute,p->end.hour,p->end.minute);
}
}
void add_student(STU *head)
{
STU *p,*q;
int no,begin_hour,begin_minute,end_hour,end_minute;
char classno[20],name[20];
scanf("%d%s%s%d%d%d%d",&no,&classno,&name,&begin_hour,&begin_minute,&end_hour,&end_hour);
for(p=head;p;p=p->next)
{
if(p->next->next==NULL)
{
p->no=no;
strcpy(p->classno,classno);
strcpy(p->name,name);
p->begin.hour=begin_hour;
p->begin.minute=begin_minute;
p->end.hour=end_hour;
p->end.minute=end_hour;
}
}
}
void delect_student(STU *head)
{
STU *p;
int no;
printf("请输入学号\n");
scanf("%d",&no);
for(p=head;p;p=p->next)
{
if(p->next->no==no){
p=p->next;
}
}
}
void student_file(STU *head)
{
STU *p;
int i;
p=head->next;
pf=fopen("student.txt","w+");
if(pf!=NULL)
{
while(p)
{
fprintf(pf,"%d%s%s%d%d%d%d",p->no,p->classno,p->name,p->begin.hour,p->begin.minute,p->end.hour,p->end.minute);
p=p->next;
}
}
fprintf(pf,"\n");
fclose(pf);
}
STU *studebt_open()
{
char classno[20],name[20];
int no,begin_hour,begin_minute,end_hour,end_minute;
STU *head,*p,*q;
pf=fopen("student.txt","r");
head=p=(STU*)malloc(sizeof(STU));
while(fscanf(pf,"%d%s%s%d%d%d%d",&no,&classno,&name,&begin_hour,&begin_minute,&end_hour,&end_minute)!=EOF)
{
q=(STU*)malloc(sizeof(STU));
q->no=no;
strcpy(q->classno,classno);
strcpy(q->name,name);
q->begin.hour=begin_hour;
q->begin.minute=begin_minute;
q->end.hour=end_hour;
q->end.minute=end_minute;
p->next=q;
p=q;
}
fclose(pf);
return head;
}

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