net.rar_C语言用户登录_c 外卖asp系统_c++用户管理_外卖_外卖系统

#include <winsock2.h> #include <stdio.h> #include <string.h> #include <malloc.h> #pragma comment(lib,"wsock32.lib") #define MAX_LEN 1024 void InitListenSocket(SOCKET& Listen_Socket) { int ret; WSADATA wsadata; int Port = 5150; SOCKADDR_IN Server_Addr; if ((ret = WSAStartup(MAKEWORD(2,2), &wsadata)) != 0) { printf("WSAStartup failed with error %d\n", ret); return; } if ((Listen_Socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == INVALID_SOCKET) { printf("socket failed with error %d\n", WSAGetLastError()); WSACleanup(); return; } Server_Addr.sin_family = AF_INET; Server_Addr.sin_port = htons(Port); Server_Addr.sin_addr.s_addr = htonl(INADDR_ANY); if (bind(Listen_Socket, (SOCKADDR *)&Server_Addr, sizeof(Server_Addr))== SOCKET_ERROR) { printf("bind failed with error %d\n", WSAGetLastError()); closesocket(Listen_Socket); WSACleanup(); return; } if (listen(Listen_Socket, 5) == SOCKET_ERROR) { printf("listen failed with error %d\n", WSAGetLastError()); closesocket(Listen_Socket); WSACleanup(); return; } printf("We are awaiting a connection on port %d.\n", Port); } ////////////////////////////////////////////////////////////////////////// struct user { char name[20]; char code[8]; }us; struct food { char name[20]; int charge; char intro[20]; }food; struct offer { int num; char us_n[20]; char fo_n[20]; int qu; char state[15]; }offer; void save_user() { FILE *fp; if((fp=fopen("user_list","ab+"))==NULL) { printf("cant open file\n"); return; } if(fwrite(&us,sizeof(struct user),1,fp)!=1) printf("file write error\n"); fclose(fp); } void save_food() { FILE *fp; if((fp=fopen("food_list","ab+"))==NULL) { printf("cant open file\n"); return; } if(fwrite(&food,sizeof(struct food),1,fp)!=1) printf("file write error\n"); fclose(fp); } int suo(struct offer *h) { struct offer *q=h; int i=0; FILE *p; if((p=fopen("offer_list","rb"))==NULL) { printf("cant open file\n"); } while(fread(&offer,sizeof(struct offer),1,p)==1) {*q=offer; ++q;++i;} fclose(p); return i; } int sus(struct user *h) { struct user *q=h; int i=0; FILE *p; if((p=fopen("user_list","rb"))==NULL) { printf("cant open file\n"); } while(fread(&us,sizeof(struct user),1,p)==1) {*q=us; ++q;++i;} fclose(p); return i; } int ssav(struct food *h) { struct food *q=h; int i=0; FILE *p; if((p=fopen("food_list","rb"))==NULL) { printf("cant open file\n"); } while(fread(&food,sizeof(struct food),1,p)==1) {*q=food; ++q;++i;} fclose(p); return i; } int certify(char nam[],char code[]) { FILE *p; int flag=0; char f[20]={"admin"}; if((p=fopen("user_list","rb"))==NULL) { printf("cant open file\n"); return 1; } while(fread(&us,sizeof(struct user),1,p)==1) { if(strcmp(us.name,nam)==0) {flag=1;break;} } if(flag==0) return -1; else if(strcmp(us.code,code)==0) {if(strcmp(f,nam)==0) return 2; else return 0;} else return 1; } int del_user(char nam[]) { FILE *p; int i=0; int flag=0; if((p=fopen("user_list","ab+"))==NULL) { printf("cant open file\n"); } while(fread(&us,sizeof(struct user),1,p)==1) { ++i; if(strcmp(us.name,nam)==0) flag=1; } if(flag!=0) { struct user *h; h=(struct user*) malloc((i-1)*sizeof(struct user)); rewind(p); for(int j=0;j<(i-1);j++){ fread(&h[j],sizeof(struct user),1,p); if(strcmp(h[j].name,nam)==0) j--; } fclose(p); p=fopen("user_list","wb"); for(j=0;j<(i-1);j++) fwrite(&h[j],sizeof(struct user),1,p); } fclose(p); return flag; } int del_food(char nam[]) { FILE *p; int i=0; int flag=0; if((p=fopen("food_list","ab+"))==NULL) { printf("cant open file\n"); } while(fread(&food,sizeof(struct food),1,p)==1) { ++i; if(strcmp(food.name,nam)==0) flag=1; } if(flag!=0) { struct food *h; h=(struct food*) malloc((i-1)*sizeof(struct food)); rewind(p); for(int j=0;j<(i-1);j++){ fread(&h[j],sizeof(struct food),1,p); if(strcmp(h[j].name,nam)==0) j--; } fclose(p); p=fopen("food_list","wb"); for(j=0;j<(i-1);j++) fwrite(&h[j],sizeof(struct food),1,p); } fclose(p); return flag; } void add_offer(char a[],char c[],int m){ FILE *p; if((p=fopen("offer_list","rb"))==NULL) { printf("cant open file\n"); return; } fseek(p,-64L,2); struct offer b; fread(&b,sizeof(struct offer),1,p); struct offer offer; strcpy(offer.us_n,a); strcpy(offer.fo_n,c); memcpy(offer.state,"unconfirmed",sizeof("unconfirmed")); offer.qu=m; offer.num=b.num+1; fclose(p); FILE *fp; if((fp=fopen("offer_list","ab+"))==NULL) { printf("cant open file\n"); return; } if(fwrite(&offer,sizeof(struct offer),1,fp)!=1) printf("file write error\n"); fclose(fp); } int offer_confirm(int m) { FILE *p; int i=0; int flag=0; if((p=fopen("offer_list","ab+"))==NULL) { printf("cant open file\n"); } while(fread(&offer,sizeof(struct offer),1,p)==1) { ++i; if(offer.num==m) flag=1; } if(flag!=0) { struct offer *h; h=(struct offer*) malloc(i*sizeof(struct offer)); rewind(p); for(int j=0;j<i;j++){ fread(&h[j],sizeof(struct offer),1,p); if(h[j].num==m) memcpy(h[j].state,"confirmed!",sizeof("confirmed!")); } fclose(p); p=fopen("offer_list","wb"); for(j=0;j<i;j++) fwrite(&h[j],sizeof(struct offer),1,p); } fclose(p); return flag; } int sear(char b[]){ FILE *p; int flag=0; if((p=fopen("food_list","rb"))==NULL) { printf("cant open file\n"); } struct food food; while(fread(&food,sizeof(struct food),1,p)==1) { if(strcmp(food.name,b)==0) flag=1; } return flag; fclose(p); } //数据报格式 struct Mes_pack { char* ip_addr; char* data_buf; int data_len; }; struct Sock_data { SOCKET sock; SOCKADDR_IN addr; }; //线程接收函数 DWORD WINAPI Thread_Recv(LPVOID param); void main(void) { SOCKET Connect_Socket,Listen_Socket; SOCKADDR_IN Client_Addr; int Client_Addr_Len; int conn_num = 0; HANDLE hThread; DWORD dwThreadId; Sock_data* param= new Sock_data; InitListenSocket(Listen_Socket); Client_Addr_Len = sizeof(SOCKADDR); int i=0; //CreateThread(NULL,0,Thread_Recv,(LPVOID)param,0,&dwThreadId); while (true) { if((param->sock = accept(Listen_Socket, (SOCKADDR *) &param->addr,&Client_Addr_Len)) != INVALID_SOCKET) { printf("connection num = %d,socket = %d\n",++conn_num,param->sock); hThread = CreateThread(NULL,0,Thread_Recv,(LPVOID)param,0,&dwThreadId); } } closesocket(Connect_Socket); WSACleanup(); } DWORD WINAPI Thread_Recv(LPVOID param) { int Ret=0; int flag=0; char a[20],b[20]; char ag[20]={"请输入用户名:"}; char bg[20]={"请输入密码:"}; char fn[20]={"蔬菜名称:"}; char fc[20]={"价格:"}; char fi[20]={"介绍:"}; char of[20]={"编号:"}; char c[20]={"no found!\n"}; char d[20]={"密码错误!\n"}; char e[20]={"welcome!\n"}; Sock_data* data = new Sock_data; data->sock = ((Sock_data*)param)->sock; while(1){ send(data->sock,ag,sizeof(a),0); recv(data->sock,a,sizeof(a),0); send(data->sock,bg,sizeof(b),0); recv(data->sock,b,sizeof(b),0); int x=certify(a,b); if(x==0||x==2) { flag=x; send(data->sock,e,sizeof(e),0); break;} else if(x==1) send(data->sock,d,sizeof(d),0); else if(x==-1) send(data->sock,c,sizeof(c),0); } char g[50]={"1-查看菜单,2-订购,9-退出"}; char h[150]={"0-查看用户信息\n1-增加用户.\n2-删除用户.\n3-查看菜单.\n4-发布新菜.\n5-删除旧菜.\n6-查看订单.\n7-确认订单.\n9-退出."}; char ng[20]={"请输入用户名:"}; char f[20]={"请输入密码:"}; int m; int i; int