C语言实现-航空订票系统（飞机订票系统）
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开发环境：CodeBlocks
开发语言：C
实现功能：登录，订票，退票
数据存储：文本读写
涉及文件：
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源码如下：
#include <stdio.h> #include <stdlib.h> #include <string.h> #include <stdbool.h> #include <conio.h> #define MAX_Flight 50 #define MAX_Passenger 20 #define MAX_Order 50 typedef struct Flight char fid[20]; //航班号 char fname[20]; //航班名称 char start[10]; //起点 char end[10]; //终点 int fnum; //票数 Flight; typedef struct Passenger char pid[20]; //身份证 char pname[10]; //姓名 char password[20]; //密码 char tell[20]; //电话 Passenger; typedef struct Order char pid[20]; //身份证 char fid[20]; //航班号 int num; //票数 Order; Flight *FLI; Passenger *PAS; Order *ORD; char start[10]; //起点 char end[10]; //终点 char search_fid[50][20]; //符合条件的航班号 int search_fnum[50]; //符合条件的航班票数 int online = 0; //是否登录的变量 char online_pid[20]; //在线用户的身份证 int search_num = 0; //符合条件的航班数 void init_sys(void); // 系统初始化 void show_flight(void); // 显示航班表 void start_sys(void); // 系统开始运行 void exit_sys(void); // 退出系统 void menu(void); // 生成主菜单 void login(void); // 登录 void logout(void); //用户登出 void passenger_info(void); //查询旅客信息 bool change_pas_info(void); //修改旅客信息 void search_start(void); // 生成查询页面 bool search(void); // 查询航班 void order_list(void); // 生成订单表 void del_order(void); // 退票 void clear_stdin(void); // 清除输入缓冲区 char* get_str(char* str,size_t len); // 获取字符串 char get_cmd(char start,char end); // 获取cmd命令 int main() init_sys(); start_sys(); exit_sys(); return 0; // 系统初始化 void init_sys(void) // 申请堆内存、加载数据 FLI = calloc(MAX_Flight,sizeof(Flight)); PAS = calloc(MAX_Passenger,sizeof(Passenger)); ORD = calloc(MAX_Order,sizeof(Order)); printf("system_init...\n"); FILE* ofrp = fopen("order.txt","r"); int i=0; for(i=0; i<MAX_Order; i++) //读取文本中的数据到内存 int num = 0; num = fscanf(ofrp,"%s %s %d\n",ORD[i].pid,ORD[i].fid,&ORD[i].num); FILE* ffrp = fopen("flight.txt","r"); for(i=0; i<MAX_Flight; i++) int num = 0; num = fscanf(ffrp,"%s %s %s %s %d\n",FLI[i].fid,FLI[i].fname,FLI[i].start,FLI[i].end,&FLI[i].fnum); FILE* pfrp = fopen("passenger.txt","r"); for(i=0; i<MAX_Passenger; i++) int num = 0; num = fscanf(pfrp,"%s %s %s %s\n",PAS[i].pid,PAS[i].pname,PAS[i].password,PAS[i].tell); // 显示航班表 void show_flight(void) int i = 0; for(i=0; i<MAX_Flight; i++) if(strlen(FLI[i].fid) != 0) printf("id:%s name:%s start:%s end:%s fnum:%d\n",FLI[i].fid,FLI[i].fname,FLI[i].start,FLI[i].end,FLI[i].fnum); // 系统开始运行 void start_sys(void) // 进入系统的业务流程控制 //printf("系统开始运行...\n"); //show_flight(); while(true) menu(); switch(get_cmd(‘0‘,‘7‘)) case ‘1‘: search_start(); break; case ‘2‘: order_list(); break; case ‘3‘: del_order(); break; case ‘4‘: passenger_info(); break; case ‘5‘: change_pas_info(); break; case ‘6‘: login(); break; case ‘7‘: logout(); break; case ‘0‘: return; // 系统结束 void exit_sys(void) printf("data insert...\n"); FILE* ofwp = fopen("order.txt","w"); printf("ready insert order.txt\n"); int i= 0; for(i=0; i<MAX_Order; i++) //数据存储回本地 int num = 0; if(strlen(ORD[i].pid) != 0) num = fprintf(ofwp,"%s %s %d\n",ORD[i].pid,ORD[i].fid,ORD[i].num); //printf("insert order.txt success\n"); FILE* ffwp = fopen("flight.txt","w"); printf("insert flight.txt\n"); for(i=0; i<MAX_Flight; i++) int num = 0; if(strlen(FLI[i].fid) != 0) num = fprintf(ffwp,"%s %s %s %s %d\n",FLI[i].fid,FLI[i].fname,FLI[i].start,FLI[i].end,FLI[i].fnum); //printf("insert flight.txt success\n"); FILE* pfwp = fopen("passenger.txt","w"); printf("insert passenger.txt\n"); for(i=0; i<MAX_Passenger; i++) int num = 0; if(strlen(PAS[i].pid) != 0) num = fprintf(pfwp,"%s %s %s %s\n",PAS[i].pid,PAS[i].pname,PAS[i].password,PAS[i].tell); //printf("insert passenger.txt success\n"); // 释放内存、保存数据 free(FLI); free(PAS); free(ORD); printf("exit...\n"); // 生成主菜单 void menu(void) printf("\n"); printf("********************************\n"); printf("| |\n"); printf("| flight order system |\n"); printf("* 1.search_flight *\n"); //查询航班 printf("| 2.order_list |\n"); //查询订票信息 printf("* 3.del_order *\n"); //退订 printf("| 4.passenger_info |\n"); //查询旅客信息 printf("* 5.change_pas_info *\n"); //修改旅客信息 printf("| 6.login |\n"); //用户登录 printf("* 7.logout *\n"); //用户登出 printf("| 0.exit_sys |\n"); //退出系统 printf("| |\n"); printf("********************************\n"); //printf("\n"); // 登录 void login(void) if(online == 0) //如果没有登录 int i=0; int time = 0; while(time<3) char entry_pid[20]; //临时变量身份证 char entry_pw[20]; //临时变量密码 printf("please login!\n"); printf("please entry pid:"); get_str(entry_pid,20); printf("please entry password:"); get_str(entry_pw,20); for(i=0; i<MAX_Passenger; i++) if(strlen(entry_pid)==0 || strlen(entry_pw)==0) printf("pid or password can‘t be empty\n"); time++; break; else if(strcmp(PAS[i].pid,entry_pid) == 0 && strcmp(PAS[i].password,entry_pw) == 0) printf("login success!\n"); strcpy(online_pid,entry_pid); online = 1; return; else if(i==MAX_Passenger-1) printf("pid or password error\n"); time++; online = -1; printf("you have been locked,you can use this system now\n"); else if(online ==1) printf("you have been login\n"); else printf("you have been locked,you can use this system now\n"); // 用户登出 void logout(void) if(online == 1) //如果已经登录 online = 0; printf("logout success\n"); else if(online == -1) printf("you have been locked,you can use this system now\n"); else printf("you have not login\n"); // 查询旅客信息 void passenger_info(void) if(online == 1) //如果已经登录 //printf("online_pid:"); //puts(online_pid); int i = 0; for(i=0; i<MAX_Passenger; i++) if(strcmp(online_pid,PAS[i].pid)==0) printf("pid:%s, pname:%s, password:%s, tell:%s\n",PAS[i].pid,PAS[i].pname,PAS[i].password,PAS[i].tell); break; else if(online == -1) printf("you have been locked,you can use this system now\n"); else printf("you have not login\n"); //修改旅客信息 bool change_pas_info(void) if(online == 1) //如果已经登录 printf("your old info:\n"); int i = 0; for(i=0; i<MAX_Passenger; i++) if(strcmp(online_pid,ORD[i].pid)==0) printf("pid:%s, pname:%s\npassword:%s, tell:%s\n",PAS[i].pid,PAS[i].pname,PAS[i].password,PAS[i].tell); break; char new_pid[20]; char new_pname[10]; char new_password[20]; char new_tell[20]; printf("please entry new pid:"); get_str(new_pid,20); printf("please entry new pname:"); get_str(new_pname,10); printf("please entry new password:"); get_str(new_password,20); printf("please entry new tell:"); get_str(new_tell,20); strcpy(PAS[i].pid,new_pid); strcpy(PAS[i].pname,new_pname); strcpy(PAS[i].password,new_password); strcpy(PAS[i].tell,new_tell); printf("change success\n"); else if(online == -1) printf("you have been locked,you can use this system now\n"); else printf("you have not login\n"); // 开始查询航班 void search_start(void) if(search()) printf("1.order\n"); printf("0.back\n"); char cmd = get_cmd(‘0‘,‘1‘); if(cmd == ‘0‘) return; //start_sys(); else char fid[20]; // 选择的航班号 if(online == 1) // 如果已经登录 printf("please entry fid:"); get_str(fid,20); if(0 == strlen(fid)) printf("fid is empty\n"); int i = 0; for(i=0; i<search_num; i++) //printf("fid:%s s_fid:%s num:%d\n",fid,search_fid[i],search_fnum[i]); if(strcmp(fid,search_fid[i])==0 && search_fnum[i]>0) //查询到对应航班 printf("order success\n"); int j=0; for(j=0; j<MAX_Flight; j++) // 遍历航班表 if(strcmp(fid,FLI[j].fid)==0) FLI[j].fnum--; //票数减1 break; int k=0; for(k=0; k<MAX_Order; k++) // 遍历订票表 //printf("ready insert...\n"); if(strlen(ORD[k].pid) == 0) // 在空位置插入数据 strcpy(ORD[k].pid,online_pid); // 插入当前用户身份证 strcpy(ORD[k].fid,search_fid[i]); // 插入当前选择的航班号 ORD[k].num = 1; printf("insert_to_order success\n"); break; return; else if(strcmp(fid,search_fid[i])==0 && search_fnum[i] == 0) printf("no ticket\n"); search_start(); else if(i==MAX_Flight-1) printf("don‘t have this fid\n"); search_start(); else if(online == -1) printf("you have been locked,you can use this system now\n"); else login(); // 查询航班 bool search(void) printf("start: \n"); get_str(start,10); printf("end: \n"); get_str(end,10); int i=0; search_num = 0; for(i=0; i<MAX_Flight; i++) if(strlen(start) == 0 || strlen(end) == 0) printf("start or end can‘t be empty\n"); return false; if(strcmp(FLI[i].start,start)==0 && strcmp(FLI[i].end,end)==0) printf("fid:%s, ticket_num:%d\n",FLI[i].fid,FLI[i].fnum); strcpy(search_fid[search_num],FLI[i].fid); search_fnum[search_num] = FLI[i].fnum; //printf("search_fid[%d]:%s, search_fun[%d]:%d\n",search_num,search_fid[search_num],search_num,search_fnum[search_num]); ++search_num; if(0 == search_num && i == MAX_Flight-1) printf("no flight\n"); return false; if(search_num > 0 && i == MAX_Flight-1) //show_flight(); return true; // 输出订单信息 void order_list(void) if(online == 1) int i=0; for(i=0; i<MAX_Order; i++) if(strcmp(online_pid,ORD[i].pid)==0) //printf("online_pid:%s\n",online_pid); printf("fid:%s, pid:%s, ticket:%d\n",ORD[i].fid,ORD[i].pid,ORD[i].num); else if(online == -1) printf("you have been locked,you can use this system now\n"); else login(); // 删除订单 void del_order(void) if(online == 1) char fid[20]; printf("order_list:\n"); order_list(); printf("please entry del_order fid:"); get_str(fid,20); int i=0; for(i=0; i<MAX_Order; i++) if(strlen(fid)==0) //判空 printf("del_order fid can‘t be empty\n"); return; if(strcmp(fid,ORD[i].fid)==0) memset(ORD[i].pid,‘\0‘,sizeof(ORD[i].pid)); int j=0; for(j=0; j<MAX_Flight; j++) if(strcmp(fid,FLI[j].fid)==0) FLI[j].fnum++; // 返还飞机票 break; printf("delete success\n"); return; else if(online == -1) printf("you have been locked,you can use this system now\n"); else login(); // 清理输入缓冲区 /*void clear_stdin(void) stdin->_IO_read_ptr = stdin->_IO_read_end;//清理输入缓冲区 */ // 读取输入字符串 char* get_str(char* str,size_t len) if(NULL == str) puts("empty ptr！"); return NULL; char *in=fgets(str,len,stdin); size_t cnt = strlen(str); if(‘\n‘ == str[cnt-1]) str[cnt-1] = ‘\0‘; else scanf("%*[^\n]"); scanf("%*c"); //clear_stdin(); return str; // 获取cmd命令 char get_cmd(char start,char end) //clear_stdin(); printf("please entry cmd:"); while(true) char val = getch(); if(val >= start && val <= end) printf("%c\n",val); return val;
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