银行数据库课程设计

1、#include<stdio.h>#include<string.h>#include<conio.h>#include<stdlib.h>#define file "temp.txt" /数据存储的文件名struct user /用户类型定义(账号，姓名，身份证号，余额)int id; char name20;char person_num19;double money;void add() /添加用户资料 printf("%30sn","*添加用户*");printf("-

2、nn");struct user getuser();int count(); /函数目的：计算文件中的记录数目 以生成自动账号FILE *fp;int number;struct user temp;if(fp=fopen(file,"ab")=NULL)printf("cannot open file!n");exit(1);temp=getuser(); /读取用户名number=count(); temp.id=number+1; /生成自动账号 fwrite(&temp,sizeof(struct user),1,fp);pr

3、intf("添加用户成功!n");fclose(fp);int count()/函数目的：计算文件中的记录总数 FILE *fp;int num;struct user temp;num=0;if(fp=fopen(file,"rb")=NULL)printf("cannot open file!n");exit(1);while(fread(&temp,sizeof(struct user),1,fp)num+;fclose(fp);return num;struct user getuser()void getname(c

4、har *name);void getperson_num(char *person_num);struct user temp;printf("请输入用户姓名(字符数<20): "); /读取相关开户信息getname();printf("请输入用户身份证号码: ");getperson_num(temp.person_num);printf("输入开户金额:");do /判断开户金额(>=100)scanf("%lf",&temp.money);fflush(stdin);

5、if(temp.money)<100.0)printf("开户金额不能小于100n");elsebreak;printf("重新输入开户金额：");while(1);return temp;void getname(char *name) /函数功能：读取用户姓名(字符数<20)doscanf("%s",name);fflush(stdin);if(strlen(name)=0)printf("姓名不能为空!n");elseif(strlen(name)>=20)printf("姓名不能

6、超过20个字符!n");elsebreak;printf("重新输入姓名: ");while(1); /循环以保证读入数据有效void getperson_num(char *person_num) /函数功能：读取用户身份证号码(15位 或者 18位 ) doint i,mark;char ch;for(i=0,mark=0;i+) /输入有效性判断(只能是数字)if(ch=getchar()!='n')if(ch<='9'&&ch>='0')person_numi=ch;elsepri

7、ntf("身份证号码只能是数字!n");mark=1;break;else break;person_numi='0'if(mark=1)continue;if(strlen(person_num)!=15&&strlen(person_num)!=18)printf("身份证号码只能是15位，或者18位!n");elsebreak;printf("重新输入身份证号码: ");while(1);/循环以保证读入数据有效void select_name()/按照姓名查询账户余额void getname(c

8、har *name);printf("%30sn","*按照姓名查询账户余额*");printf("%8s %15s %15s %10sn","账号","用户姓名","身份证号码","存款余额");printf("-nn");FILE * fp;struct user temp;char name20;if(fp=fopen(file,"rb")=NULL)printf("cannot open file!

9、n");exit(1);printf("输入要查询的姓名:"); /调用读取用户名函数getname(name);while(fread(&temp,sizeof(struct user),1,fp) /循环读取每一条记录 判断是否为要查看的记录if(strcmp(,name)=0)printf("NO.%d %15s %15s %.2fn",temp.id,,temp.person_num,temp.money);fclose(fp);void select_id() /按照账号查询账户余额int

10、count();printf("%30sn","*按照编号查询账户余额*");printf("%8s %15s %15s %10sn","编号","用户姓名","身份证号码","存款余额");printf("-nn");FILE * fp;struct user temp;int i,maxnum;if(fp=fopen(file,"rb")=NULL)printf("cannot open file!n&

11、quot;);exit(1);maxnum=count();printf("输入要查询账号:"); /判断账号是否在记录中scanf("%d",&i);if(i<1|i>maxnum)printf("你要查询的账号不存在!");return;while(fread(&temp,sizeof(struct user),1,fp)/循环读取每一条记录 判断是否为要查看的记录if(temp.id=i)printf("NO.%d %15s %15s %.2fn",temp.id,temp.nam

12、e,temp.person_num,temp.money);fclose(fp);void display() /显示用户资料printf("%30sn","*用户资料显示*"); printf("%8s %15s %15s %10sn","账号","用户姓名","身份证号码","存款余额");printf("-nn");FILE * fp;struct user temp;if(fp=fopen(file,"rb"

13、)=NULL)printf("cannot open file!n");exit(1);while(fread(&temp,sizeof(struct user),1,fp)printf("NO.%d %15s %15s %.2fn",temp.id,,temp.person_num,temp.money);fclose(fp);void save_money() /函数功能：按账号存款printf("%30sn","*用户存款业务*");printf("-nn");i

14、nt count();FILE *fp;int i,num,mark;struct user *temp;num=count(); /根据记录数申请空间temp=(struct user *)malloc(num*sizeof(struct user);if(fp=fopen(file,"rb")=NULL)printf("cannot open file!n");exit(1);for(i=0;i<num;i+)/将文件内容存入数组fread(&tempi,sizeof(struct user),1,fp);fclose(fp);prin

15、tf("输入要存款账号:"); /读取存款账号scanf("%d",&mark);if(mark<1|mark>num)printf("你要存款账号不存在!");return;if(fp=fopen(file,"wb")=NULL) /写方式打开文件，覆盖原文件中的内容printf("cannot open file!n");exit(1);for(i=0;i<num;i+)if(tempi.id=mark)double money=0;printf("输入要

16、存入的金额:");scanf("%lf",&money);if(money<=0)printf("只能为正数!n");money=0;tempi.money +=money; /修改该用户的信息fwrite(&tempi,sizeof(struct user),1,fp);fclose(fp);free(temp);printf("你存款业务已办妥!n");void get_money() /函数功能：用户取款printf("%30sn","*用户取款业务*");

17、printf("-nn");int count();FILE *fp;int i,num,mark;struct user *temp;num=count();/根据记录数申请空间temp=(struct user *)malloc(num*sizeof(struct user);if(fp=fopen(file,"rb")=NULL)printf("cannot open file!n");exit(1);for(i=0;i<num;i+)/读取文件内容fread(&tempi,sizeof(struct user),

18、1,fp);fclose(fp);printf("输入要取款账号:");scanf("%d",&mark);if(mark<1|mark>num)printf("你要取款账号不存在!");return;if(fp=fopen(file,"wb")=NULL)printf("cannot open file!n");exit(1);for(i=0;i<num;i+) /写方式打开文件，覆盖原文件中的内容if(tempi.id=mark) double money=0;pr

19、intf("输入要取出的金额:");scanf("%lf",&money);if(money<=0)/判断用户余额是否足够printf("只能为正数!n");money=0;elseif(money>tempi.money)printf("你的余额不足!n");money=0;tempi.money -=money;fwrite(&tempi,sizeof(struct user),1,fp);fclose(fp);free(temp);printf("你取款业务已办妥!n&q

20、uot;);void del() /销户 int count();printf("%30sn","*注销账户*");printf("%8s %15s %15s %10sn","账号","用户姓名","身份证号码","存款余额");printf("-nn");FILE * fp;struct user temp;int i,maxnum;if(fp=fopen(file,"rb")=NULL)printf("

21、cannot open file!n");exit(1);maxnum=count();printf("输入要销户账号:"); /判断编号是否在记录中scanf("%d",&i);if(i<1|i>maxnum)printf("你要查询的账号不存在!");return;while(fread(&temp,sizeof(struct user),1,fp)/循环读取每一条记录 判断是否为要查看的记录if(temp.id=i&&temp.money=0.00)/余额为0temp.id=

22、-1;/算无效帐户printf("NO.%d %15s %15s %.2fn",temp.id,,temp.person_num,temp.money); /printf("%dn",temp.id); fwrite(&temp,sizeof(struct user),1,fp);/保存修改 fclose(fp);void print()/函数功能：输出界面printf("%30sn","*活期储蓄帐目管理系统*");printf("-nn");printf("%8s,%-20sn","1","储户开户");printf("%8s,%-20sn","2","按照姓名查询账户余额");printf("%8s,%-20sn","3","按照账号查询账户余额");printf("%8s,%-20sn","4","显示用户信息");printf("%8s,%-20sn","