杂志订阅系统管理 C语言

#include<stdio.h> #define max 20 struct magazine { char name[11]; char sex[6]; char addr[11]; char phone_number[12]; char unit_price[5]; char amount[4]; char time_limit[11]; }order[max]; void save(int n); int load_record(); void search(); void printf_n(int n); void printf_one(int i); void input(int i); statitic(); void add(); void menu(); main() { FILE *fp; fp=fopen("record.txt","w");/*在C:\Documents and Settings\Administrator里建立一个"record.txt"记事本*/ fclose(fp); menu(); } void menu() { int w,n; do { clrscr(); printf("\n"); printf("\t\t* * * * * * * * * * * * * * * * * * * * * * * * *\n"); printf("\t\t \n"); printf("\t\t \n"); printf("\t\t Welcome to the magazine order system !^_^ \n"); printf("\t\t \n"); printf("\t\t \n"); printf("\t\t* * * * * * * * * * * * * * * * * * * * * * * * *\n"); printf("\n\n\t\t *********************************************\n\n"); printf("\t\t 1:add_new_subscriber\n"); printf("\t\t 2:browse\n"); printf("\t\t 3:statistic\n"); printf("\t\t 4:exit\n\n"); printf("\t\t *********************************************\n\n"); printf(" Choice your number(1-4):[ ]\b\b"); scanf("%d",&n); if(n<1||n>4) w=1; else w=0; } while (w==1); /***************选择功能****************/ switch(n) { case 1:add();break;/*增加新订户记录*/ case 2:search();break;/*查找过期的订户记录并删除*/ case 3:statistic();break;/*统计*/ case 4:exit();break;/*退出*/ } } /*******************************************添加模块***************************************************/ void add() { int t,i,m; clrscr(); t=load_record(); printf("How many groups information do you want to add?\n"); printf("Enter the number:[ ]\b\b\b"); scanf("%d",&m); for(i=0;i<m;i++) { printf("\nInput %dth subscriber record.\n",i+1); input(t+i);/*调用输入函数*/ } save(t+m);/*调用保存函数 保存t+m组数据*/ clrscr();/**********清屏************/ menu();/*返回登陆界面*/ } void input(int i) { printf("Please input:\nName sex address phone_number unit_price amount time_ imit \n"); scanf("%s%s%s%s%s%s%s",&order[i].name,&order[i].sex,&order[i].addr,&order[i].phone_number,&order[i].unit_price,&order[i].amount,&order[i].time_limit); } /*****************************************统计模块**************************************************/ statistic() { int t; t=load_record(); printf("The amount of subscriber is[%d]\b\b\b",t); printf_n(t); printf("\n\n\nPress any key to go back...\n\n"); getch(); menu(); } void printf_one(int i)/*显示一个仪器记录的函数*/ { printf("%-10s %-5s %-10s %-11s %-4s %-3s %-10s\n\n",order[i].name,order[i].sex,order[i].addr,order[i].phone_number,order[i].unit_price,order[i].amount,&order[i].time_limit); } void printf_n(int n)/*显示n个仪器记录的函数*/ { int j; clrscr();/**********清屏************/ printf("Name sex address phone_number price amount time_ imit\n\n"); for(j=0;j<n;j++) { if((j+1)%10==0)/*控制显示，每屏显示10行*/ { printf("\n\nPass any key to continue ..."); getch(); puts("\n\n"); } printf_one(j);/*调用显示一个仪器记录的函数*/ } } /****************************查询模块********************************************/ void search() { FILE *fp; char date[11],str[2]; int t,i,sum=0; t=load_record(); clrscr(); printf("Please input the date:[ ]\b\b\b\b\b\b\b\b\b\b\b"); scanf("%s",date); printf("\n"); if((fp=fopen("record.txt","w"))==NULL)/*以只写方式打开*/ { printf("\nCannot open file\n"); exit(0); } clrscr(); printf("\n"); for(i=0;i<t;i++) { if(strcmp(order[i].time_limit,date)<0) { sum++; printf("\n"); printf_one(i);/**********把符合条件的记录显示出来************************/ printf("\n\nThe record is out of date!"); printf("\n\nDo you want to delete it's information?('Y'or'N'):[ ]\b\b"); scanf("%s",str);; if(strcmp(str,"Y")==0||strcmp(str,"y")==0) continue; } fwrite(&order[i],sizeof(struct magazine),1,fp); } fclose(fp); if(sum==0) { printf("***************************************************\n\n"); printf("Sorry! Cannot find the equipment which you want to.\n\n"); printf("***************************************************\n\n"); } printf("\n\n\nPress any key to go back the former step...\n"); getch(); menu(); } /****************************公共函数********************************************/ int load_record()/***加载仪器信息并计算记录仪器个数的函数***/ { FILE *fp; int i; if((fp=fopen("record.txt","r"))==NULL)/*以只读方式打开*/ { printf("\nCannot open file\n"); exit(0); } for(i=0;!feof(fp);i++)/*从文件中读入数据并保存在结构体数组中*/ fread(&order[i],sizeof(struct magazine),1,fp); fclose(fp); return(i-1); } void save(int n)/*n表示保存n组数据，m表示保存在哪个文件夹里*/ { FILE *fp; int i; fp=fopen("record.txt","w");/*以只写方式打开*/ if(fp==NULL) { printf("\nCannot open file\n"); exit(0); } for(i=0;i<n;i++) { fwrite(&order[i],sizeof(struct magazine),1,fp); } fclose(fp); }