guanlixitong.txt

实现一个简单的学生宿舍管理系统。要求能添加、更新和删除和查询学生信息的功能

#include "stdafx.h" 
#include "stdio.h" 
#include "iostream.h" 
#include "string.h" 

#define ERROR 0 
#define OK 1 
#define MAXSIZE 2500 
#define EQ(a,b) ((a)==(b)) 


typedef int Status; 

int N=4;//全局变量来储存所输入的个数； 


struct student 
{ 
//数据结构类型； 
char name[10]; 
int num; 
int room; 
}; 


/*--------------------------------------------------------------------------*/ 

Status Input() 
{ 
//数据输入； 
int i=0; 
int flag=1; 
char ch; 
FILE * fpdata; 
student stu[MAXSIZE]; 
if((fpdata=fopen("studata.txt","wb"))==NULL) 
{ 
printf("cannot open studata.c file!"); 
return ERROR; 
} 
while(flag) 
{ 
printf("是否继续输入（Y/N）："); 
cin>>ch; 
if(ch=='y'||ch=='Y') 
{ 
scanf("%s%d%d",stu[i].name,&stu[i].num,&stu[i].room); 
fwrite(&stu[i],sizeof(struct student),1,fpdata); 
i++; 
} 
else flag=0; 
} 
N=i; 
fclose(fpdata); 
printf("数据输入完成！\n"); 
return OK; 
} 

Status Print(char *filename) 
{ 
//输出数据； 
FILE * fpdata; 
student st; 
int i=0; 
if((fpdata=fopen(filename,"rb"))==NULL) 
{ 
printf("cannot open studata.c file!"); 
return ERROR; 
} 
while(i<N) 
{ 
fread(&st,sizeof(struct student),1,fpdata); 
printf("%s %d %d\n",st.name,st.num,st.room); 
i++; 
} 
fclose(fpdata); 
return OK; 
} 

/* ******** ******** ********* ********* ********* ********* ********* */ 
/* ******** ******** ********* ********* ********* ********* ********* */ 


Status NameSort() 
{ 
//姓名排序； 
int i,j; 
FILE * fpdata; 
FILE * fpnamesort; 
student stu[MAXSIZE]; 
if((fpdata=fopen("studata.txt","rb"))==NULL) 
{ 
printf("cannot open data.c file!"); 
return ERROR; 
} 
for(i=1;i<=N;i++) 
{ 
fread(&stu[i],sizeof(struct student),1,fpdata); 
} 
fclose(fpdata); 
if((fpnamesort=fopen("namesort.txt","wb"))==NULL) 
{ 
printf("cannot open nsort.c"); 
return ERROR; 
} 
for(i=2;i<=N;i++) 
{ 
if(strcmp(stu[i].name,stu[i-1].name)<0) 
{ 
strcpy(stu[0].name,stu[i].name); 
stu[0].num=stu[i].num; 
stu[0].room=stu[i].room; 
strcpy(stu[i].name,stu[i-1].name); 
stu[i].num=stu[i-1].num; 
stu[i].room=stu[i-1].room; 
for(j=i-2;(strcmp(stu[0].name,stu[j].name))<0;j--) 
{ 
strcpy(stu[j+1].name,stu[j].name); 
stu[j+1].num=stu[j].num; 
stu[j+1].room=stu[j].room; 
} 
strcpy(stu[j+1].name,stu[0].name); 
stu[j+1].num=stu[0].num; 
stu[j+1].room=stu[0].room; 
} 
} 
for(i=1;i<=N;i++) 
{ 
fwrite(&stu[i],sizeof(struct student),1,fpnamesort); 
} 
fclose(fpnamesort); 
return OK; 
} 

/* ******** ******** ********* ********* ********* ********* ********* */ 
/* ******** ******** ********* ********* ********* ********* ********* */ 

Status NumSort() 
{ 
//学号排序； 
int i,j; 
FILE * fpdata; 
FILE * fpnumsort; 
student stu[MAXSIZE]; 
if((fpdata=fopen("studata.txt","rb"))==NULL) 
{ 
printf("cannot open data.c file!"); 
return ERROR; 
} 
for(i=1;i<=N;i++) 
{ 
fread(&stu[i],sizeof(struct student),1,fpdata); 
} 
fclose(fpdata); 
if((fpnumsort=fopen("numsort.txt","wb"))==NULL) 
{ 
printf("cannot open nsort.c"); 
return ERROR; 
} 
for(i=2;i<=N;i++) 
{ 
if(stu[i].num<stu[i-1].num) 
{ 
strcpy(stu[0].name,stu[i].name); 
stu[0].num=stu[i].num; 
stu[0].room=stu[i].room; 
strcpy(stu[i].name,stu[i-1].name); 
stu[i].num=stu[i-1].num; 
stu[i].room=stu[i-1].room; 
for(j=i-2;stu[0].num<stu[j].num;j--) 
{ 
strcpy(stu[j+1].name,stu[j].name); 
stu[j+1].num=stu[j].num; 
stu[j+1].room=stu[j].room; 
} 
strcpy(stu[j+1].name,stu[0].name); 
stu[j+1].num=stu[0].num; 
stu[j+1].room=stu[0].room; 
} 
} 
for(i=1;i<=N;i++) 
{ 
fwrite(&stu[i],sizeof(struct student),1,fpnumsort); 
} 
fclose(fpnumsort); 
return OK; 
} 

/* ******** ******** ********* ********* ********* ********* ********* */ 
/* ******** ******** ********* ********* ********* ********* ********* */ 

Status RoomSort() 
{ 
//房间号排序； 
int i,j; 
FILE * fpdata; 
FILE * fproomsort; 
student stu[MAXSIZE]; 
if((fpdata=fopen("studata.txt","rb"))==NULL) 
{ 
printf("cannot open data.c file!"); 
return ERROR; 
} 
for(i=1;i<=N;i++) 
{ 
fread(&stu[i],sizeof(struct student),1,fpdata); 
} 
fclose(fpdata); 
if((fproomsort=fopen("roomsort.txt","wb"))==NULL) 
{ 
printf("cannot open nsort.c"); 
return ERROR; 
} 
for(i=2;i<=N;i++) 
{ 
if(stu[i].room<stu[i-1].room) 
{ 
strcpy(stu[0].name,stu[i].name); 
stu[0].num=stu[i].num; 
stu[0].room=stu[i].room; 
strcpy(stu[i].name,stu[i-1].name); 
stu[i].num=stu[i-1].num; 
stu[i].room=stu[i-1].room; 
for(j=i-2;stu[0].room<stu[j].room;j--) 
{ 
strcpy(stu[j+1].name,stu[j].name); 
stu[j+1].num=stu[j].num; 
stu[j+1].room=stu[j].room; 
} 
strcpy(stu[j+1].name,stu[0].name); 
stu[j+1].num=stu[0].num; 
stu[j+1].room=stu[0].room; 
} 
} 
for(i=1;i<=N;i++) 
{ 
fwrite(&stu[i],sizeof(struct student),1,fproomsort); 
} 
fclose(fproomsort); 
return OK; 
} 


/* ******** ******** ********* ********* ********* ********* ********* */ 
/* ******** ******** ********* ********* ********* ********* ********* */ 


Status NameSearch(char * namekey) 
{ 
//按名字查询； 
//顺序查找 
int i; 
FILE * f; 
student stu[MAXSIZE]; 
if((f=fopen("namesort.txt","rb"))==NULL) 
{ 
printf("cannot open namesort.txt file!"); 
return ERROR; 
} 
for(i=1;i<=N;i++) 
{ 
fread(&stu[i],sizeof(struct student),1,f); 
} 
int low=1; 
int high=N; 
//int mid; 
int flag=0; 
int m=N; 
//char namekey; 
//int t; 
strcpy(stu[0].name,namekey); 
for(m=N;m>0;--m) 
{ 
if(!strcmp(stu[m].name,namekey)) 
printf("%s %d %d\n",stu[m].name,stu[m].num,stu[m].room); 
} 
return m; 

fclose(f); 
if(flag>0) 
{ 
printf("%s %d %d\n",stu[flag].name,stu[flag].num,stu[flag].room); 
} 
else printf("对不起，没有找到相匹配的记录\n"); 
return OK; 
} 

/* ******** ******** ********* ********* ********* ********* ********* */ 
/* ******** ******** ********* ********* ********* ********* ********* */ 

Status NumSearch(int key) 
{ 
//按学号查询； 

int i; 
FILE * f; 
student stu[MAXSIZE]; 
if((f=fopen("numsort.txt","rb"))==NULL) 
{ 
printf("cannot open namesort.txt file!"); 
return ERROR; 
} 
for(i=1;i<=N;i++) 
{ 
fread(&stu[i],sizeof(struct student),1,f); 
} 
int low=1; 
int high=N; 
int mid; 
int flag=0; 
while(low<=high) 
{ 
mid=(low+high)/2; 
if(stu[mid].num==key) 
{ 
flag=mid; 
break; 
} 
else 
{ 
if(stu[mid].num>key) 
high=mid-1; 
else 
low=mid+1; 
} 
} 
fclose(f); 
if(flag>0) 
{ 
printf("%s %d %d\n",stu[flag].name,stu[flag].num,stu[flag].room); 
} 
else printf("对不起，没有找到相匹配的记录\n"); 
return OK; 
} 

/* ******** ******** ********* ********* ********* ********* ********* */ 
/* ******** ******** ********* ********* ********* ********* ********* */ 


Status RoomSearch(int key) 
{ 
//按房间号查询； 
int i; 
FILE * f; 
student stu[MAXSIZE]; 
if((f=fopen("roomsort.txt","rb"))==NULL) 
{ 
printf("cannot open roomsort.txt file!"); 
return ERROR; 
} 
for(i=1;i<=N;i++) 
{ 
fread(&stu[i],sizeof(struct student),1,f); 
} 
int low=1; 
int high=N; 
//int mid; 
int flag=0; 
int t; 
stu[0].room=key; 
for(t=N;t>0;--t) 
{if(stu[t].room==key) 
printf("%s %d %d\n",stu[t].name,stu[t].num,stu[t].room); 


} 
return t; 
fclose(f); 
if(flag>0) 
{ 
printf("%s %d %d\n",stu[flag].name,stu[flag].num,stu[flag].room); 
} 
else printf("对不起，没有找到相匹配的记录\n"); 
return OK; 
} 

/* ******** ******** ********* ********* ********* ********* ********* */ 
/* ******** ******** ********* main() ********* ********* ********* */ 
/* ******** ******** ********* ********* ********* ********* ********* */ 
void main() 
{ 
int num; 
int room; 
int flag,flag1,flag2; 
char cha; 
char name[10]; 
cout<<" ******** 学生宿舍管理系统 ********"<<endl; 
printf(" ------Powered by GUOXIAOJIE\n"); 
printf("------------------------------------------------------\n"); 
cout<<"是否需要录入入住学生信息（Y/N）"<<endl; 
char cha1; 
cin>>cha1; 
if(cha1=='Y'||cha1=='y') 
{printf("------------------------------------------------------\n"); 
printf("请将住宿学生信息输入（姓名 学号 房间号）\n"); 
Input(); 
NameSort(); 
NumSort(); 
RoomSort(); 
} 
while(flag) 
{printf("------------------------------------------------------\n"); 
cout<<"**************** 学生宿舍管理系统 ****************"<<endl; 
printf("------------------------------------------------------\n"); 
printf("请选择操作：\n"); 
printf("A.按姓名查询\n"); 
printf("B.按学号查询\n"); 
printf("C.按房号查询\n"); 
printf("D.退出\n"); 
cout<<"注意：字母请输入大写……"<<endl; 
cin>>cha; 
switch(cha) 
{ 
case 'A' : 
flag1=1; 
while(flag1) 
{printf("------------------------------------------------------\n"); 
printf("A.输入要查询的名字\n"); 
printf("B.按姓名全部输出\n"); 
printf("C.返回\n"); 
printf("注意：字母请输入大写……\n"); 
cin>>cha; 
switch(cha) 
{ 
case 'A': 
scanf("%s",name); 
printf("查询结果为：\n"); 
printf("------------------------------------------------------\n"); 
NameSearch(name); 
printf("------------------------------------------------------\n"); 
break; 
case 'B': 
Print("namesort.txt"); 
break; 
case 'C': 
flag1=0; 
break; 
default: 
printf("------------------------------------------------------\n"); 
printf("!!!!!!!!你输入的命令无效。注意：命令字母请输入大写!!!!!!!!!!!\n"); 
} 
} 
break; 
case 'B' : 
while(flag2) 
{printf("------------------------------------------------------\n"); 
printf("A.输入要查询的学号\n"); 
printf("B.按学号全部输出\n"); 
printf("C.返回\n"); 
printf("注意：字母请输入大写……\n"); 
cin>>cha; 
switch(cha) 
{ 
case 'A': 
scanf("%d",&num); 
printf("查询结果为：\n"); 
printf("------------------------------------------------------\n"); 
NumSearch(num); 

break; 
case 'B': 
Print("numsort.txt"); 
break; 
case 'C': 
flag2=0; 
break; 
default: 
printf("------------------------------------------------------\n"); 
printf("!!!!!!!!你输入的命令无效。注意：命令字母请输入大写!!!!!!!!!!!\n"); 
} 
} 
break; 
case 'C' : 
flag1=1; 
while(flag1) 
{printf("------------------------------------------------------\n"); 
printf("A.输入要查询的宿舍号\n"); 
printf("B.按宿舍号全部输出\n"); 
printf("C.返回\n"); 
printf("注意：字母请输入大写……\n"); 
cin>>cha; 
switch(cha) 
{ 
case 'A': 
scanf("%d",&room); 
printf("查询结果为：\n"); 
printf("------------------------------------------------------\n"); 
RoomSearch(room); 
printf("------------------------------------------------------\n"); 
break; 
case 'B': 
Print("roomsort.txt"); 
break; 
case 'C': 
flag1=0; 
break; 
default: 
printf("------------------------------------------------------\n"); 
printf("!!!!!!!!你输入的命令无效。注意：命令字母请输入大写!!!!!!!!!!!\n"); 
} 
} 
break; 
case 'D' : 
flag=0; 
break; 
default: 
printf("------------------------------------------------------\n"); 
printf("!!!!!!!!你输入的命令无效。注意：命令字母请输入大写!!!!!!!!!!!\n"); 
} 
} 
}