一、需求分析：设计一个银行活期储蓄帐目管理系统（每个记录有下列数据项：账户号码、用户名、身份证号、地址等）。

(1) 能比较迅速地找到储户的帐户，以实现存款、取款记账。

(2) 能比较简单，迅速地实现插入和删除，以实现开户和销户的需要。

(3) 符合课题要求，实现相应功能；(4) 要求界面友好美观，操作方便易行；(5) 注意程序的实用性、安全性。

所使用的函数：函数: 功能如下:void mainmenu(); 输出主菜单void add(); 添加用户资料void select_name(); 按姓名查询余额void select_id(); 按账号查询余额void display(); 显示用户资料void save_money(); 用户存款void get_money(); 用户取款void delete(); 销户二、概要设计：1、所使用的存储结构是：struct user{int id;char name[20];char person_num[19];double money;}2、其流程图如下：三、详细设计：1. void add() //添加用户资料{printf("%30s\n","***添加用户***");printf("---------------------------------------------\n\n");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("不能打开文件!\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);printf("添加用户成功!\n");fclose(fp);}2. 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("不能打开文件!\n");exit(1);}while(fread(&temp,sizeof(struct user),1,fp)){num++;}fclose(fp);return num;}3. void getname(char *name) //读取用户姓名(字符数<20){do{scanf("%s",name);fflush(stdin);if(strlen(name)==0)printf("姓名不能为空!\n");elseif(strlen(name)>=20)printf("姓名不能超过20个字符!\n");elsebreak;printf("请重新输入姓名: ");}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 ){do{int 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_num[i]=ch;else{printf("身份证号码只能是数字!\n");mark=1;break;}}elsebreak;person_num[i]='\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}4. void select_name() //按照姓名查询账户余额{void getname(char *name);printf("%30s\n","***按照姓名查询账户余额***");printf("%8s %15s %15s %10s\n","账号","用户姓名","身份证号码","存款余额");printf("---------------------------------------------\n\n");FILE * fp;struct user temp;char name[20];if((fp=fopen(file,"rb"))==NULL){printf("不能打开文件!\n");exit(1);}printf("请输入要查询的姓名:"); //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 %.2f\n",temp.id,,temp.person_num,temp.mone y);}fclose(fp);}5. void select_id() //按照账号查询账户余额{int count();printf("%30s\n","***按照编号查询账户余额***");printf("%8s %15s %15s %10s\n","编号","用户姓名","身份证号码","存款余额");printf("---------------------------------------------\n\n");FILE * fp;struct user temp;int i,maxnum;if((fp=fopen(file,"rb"))==NULL){printf("cannot open file!\n");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 %.2f\n",temp.id,,temp.person_num,temp.mone y);}fclose(fp);}6. void display() //显示用户资料{printf("%30s\n","***用户资料显示***");printf("%8s %15s %15s %10s\n","账号","用户姓名","身份证号码","存款余额");printf("---------------------------------------------\n\n");FILE * fp;struct user temp;if((fp=fopen(file,"rb"))==NULL){printf("cannot open file!\n");exit(1);}while(fread(&temp,sizeof(struct user),1,fp)){printf("NO.%d %15s %15s %.2f\n",temp.id,,temp.person_num,temp.mone y);}fclose(fp);}7.void save_money() //函数功能：按账号存款{printf("%30s\n","***用户存款业务***");printf("---------------------------------------------\n\n");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++) //将文件内容存入数组fread(&temp[i],sizeof(struct user),1,fp);fclose(fp);printf("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(temp[i].id==mark){double money=0;printf("输入要存入的金额:");scanf("%lf",&money);if(money<=0){printf("金额只能为正数!\n");money=0;}temp[i].money +=money; //修改该用户的信息}fwrite(&temp[i],sizeof(struct user),1,fp);}fclose(fp);free(temp);printf("你存款业务已办妥!\n");}8.void get_money() //函数功能：用户取款{printf("%30s\n","***用户取款业务***");printf("---------------------------------------------\n\n");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("不能打开文件!\n");exit(1);}for(i=0;i<num;i++) //读取文件内容fread(&temp[i],sizeof(struct user),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("不能打开文件!\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(temp[i].id==mark){double money=0;printf("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>temp[i].money){printf("你的余额不足!\n");money=0;}temp[i].money -=money;}fwrite(&temp[i],sizeof(struct user),1,fp);}fclose(fp);free(temp);printf("你取款业务已办妥!\n");}9.void del() //销户{int count();printf("%30s\n","***注销账户***");printf("%8s %15s %15s %10s\n","账号","用户姓名","身份证号码","存款余额");printf("---------------------------------------------\n\n");FILE * fp;struct user temp;int i,maxnum;if((fp=fopen(file,"rb"))==NULL){printf("不能打开文件!\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0{temp.id=-1;//算无效帐户printf("NO.%d %15s %15s %.2f\n",temp.id,,temp.person_num,temp.mone y);//printf("%d\n",temp.id);fwrite(&temp,sizeof(struct user),1,fp);//保存修改}fclose(fp);}10void mainmenu() //函数功能：输出界面{printf("%30s\n"," ***活期储蓄帐目管理系统***");printf("---------------------------------------------------\n\n");printf("%8s,%-20s\n","** 1","储户开户**");printf("%8s,%-20s\n","** 2","按照姓名查询**");printf("%8s,%-20s\n","** 3","按照账号查询**");printf("%8s,%-20s\n","** 4","显示用户信息**");printf("%8s,%-20s\n","** 5","储户存款**");printf("%8s,%-20s\n","** 6","储户取款**");printf("%8s,%-20s\n","** 7","储户销户**");printf("%8s,%-20s\n","** 8","退出**");printf("\n请选择功能(1~8):");}四、调试分析：将软件进行初始化,即在VC++6.0中运行该程序,进入程序主菜单。