first commit

机房收费系统2.0.cpp

@@ -0,0 +1,325 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+struct time
+{
+	int hour;
+	int minute;
+};
+
+struct student
+{
+	int no;
+	int classno;
+	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 printf_student(STU *head);
+int menu_select();
+
+void student_write(STU *head);
+STU *student_read();
+
+int main()
+{
+	STU *head;
+    int n=1,k=0;
+	while(n)
+	{ 
+		switch(menu_select())
+		{
+			if(k==1)
+			{
+				head=student_read();
+			}
+			case 1:
+			{
+				system("cls");
+				head=create_student();
+				student_write(head);
+                printf("初始化信息成功！（信息已成功录入student文件）\n");
+                k=1;
+				break;
+			}
+			case 2:
+	     	{
+				system("cls");
+				end_money(head);
+				break;
+			}
+			case 3:
+				{
+				system("cls");
+				select_no(head);
+				break;
+			}
+			case 4:
+				{
+				system("cls");
+				select_classno(head);
+				break;
+			}
+			case 5:
+				{
+			    system("cls");
+				select_name(head);
+				break;
+			}
+			
+			case 7:
+				{
+				system("cls");
+				add_student(head);
+				break;
+			}
+			case 8:
+				{
+				system("cls");
+				delect_student(head);
+				break;
+			}
+			
+			case 0:
+				{
+				n=0;
+				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,*tail;
+	int no,classno,flag=1;
+	char name[20];
+	int 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("%d",&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->no=no;
+        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_minute;
+        p->next=NULL;
+        if(head==NULL)
+        {
+        	head=p;
+		}
+		else
+		{
+			tail->next=p;
+		}
+		tail=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->end.hour-p->begin.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;p=p->next)
+	{
+		if(no==p->no)
+printf("学号：%d班级：%d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;
+	int classno;
+	printf("请输入班级:\n");
+	scanf("%d",&classno);
+	for(p=head;p;p=p->next)
+	{
+		if(classno==p->classno)
+printf("学号：%d班级：%d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：%d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,classno,begin_hour,begin_minute,end_hour,end_minute;
+	char name[20];
+	scanf("%d%d%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;
+			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,*q;
+	int no;
+	p=head;
+	printf("请输入学号\n");
+	scanf("%d",&no);
+	if(p->next->no==no)
+	{
+		q=p->next;
+		p->next=q->next;
+		free(q);
+	}
+
+	printf("删除成功！\n");
+} 
+
+void student_write(STU *head)
+{
+	STU *p;
+	int i;
+	p=head;
+	pf=fopen("student.txt","a+");
+	if(pf!=NULL)
+	{
+	    while(p)
+	    {
+		fprintf(pf,"%d%d%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;
+	    }
+	}
+	else
+	{
+		printf("error!\n");
+		exit(0);
+	}
+	fclose(pf);
+}
+
+STU *student_read()
+{
+	char name[20];
+	int no,classno,begin_hour,begin_minute,end_hour,end_minute;
+	STU *head,*p,*q;
+	pf=fopen("student.txt","a+");
+	head=p=(STU*)malloc(sizeof(STU));
+	while(fscanf(pf,"%d%d%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;
+		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;
+}
+