Linux系统编程阶段项目：基于消息队列的银行管理系统

#include "client.h" int id_ask; int id_reply; int main() { int num; id_ask = msgget(KEY_ASK,IPC_CREAT|0644); id_reply = msgget(KEY_REPLY,IPC_CREAT|0644); while(num = show()) { if (num < 0 || num >6) { printf("非法输入请重新输入\n"); continue; } switch(num) { case 1: open_kh(); break; case 2: destory(); break; case 3: save(); break; case 4: take(); break; case 5: trans_w(); break; case 6: look(); break; } } return 0; } int show() { int num; printf("请输入要办理的业务\n"); printf("—————1.开户—————\n"); printf("—————2.销户—————\n"); printf("—————3.存钱—————\n"); printf("—————4.取钱—————\n"); printf("—————5.转账—————\n"); printf("—————6.查询—————\n"); printf("—————0.退出—————\n"); scanf("%d",&num); return num; } void open_kh(void) { struct TAG buf,rbuf; memset(&buf,0,sizeof(buf)); memset(&rbuf,0,sizeof(rbuf)); buf.type = OPEN; printf("输入姓名\n"); scanf("%s",buf.name); printf("输入密码\n"); scanf("%s",buf.passwd); printf("输入起始金额\n"); scanf("%f",&buf.money); //向服务器发送开户请求 msgsnd(id_ask,&buf,sizeof(buf)-sizeof(long),0); //接收服务器反馈开户结果 msgrcv(id_reply,&rbuf,sizeof(rbuf)-sizeof(long),OPEN,0); if(strlen(rbuf.err) != 0) printf("open err:%s",rbuf.err); else printf("新开账户：%d, 密码：%s ,余额：%.2f",rbuf.id,rbuf.passwd,rbuf.money); } void destory(void)//销户 { struct TAG acc,racc; memset(&acc,0,sizeof(acc)); memset(&racc,0,sizeof(racc)); acc.type = DESTROY; printf("输入要销户的账号\n"); scanf("%d",&acc.id); printf("输入要销户账号的密码\n"); scanf("%s",acc.passwd); msgsnd(id_ask,&acc,sizeof(acc)-sizeof(long),0); msgrcv(id_reply,&racc,sizeof(racc)-sizeof(long),DESTROY,0); if(strlen(racc.err) == 0) printf("销户成功\n"); else { printf("销户失败：%s\n",racc.err); } } void look(void)//查询 { struct TAG buf,rbuf; memset(&buf,0,sizeof(buf)); memset(&rbuf,0,sizeof(rbuf)); buf.type = LOOK; printf("输入要查询的账号\n"); scanf("%d",&buf.id); printf("输入要查询账号的密码\n"); scanf("%s",buf.passwd); msgsnd(id_ask,&buf,sizeof(buf)-sizeof(long),0); msgrcv(id_reply,&rbuf,sizeof(rbuf)-sizeof(long),LOOK,0); if(strlen(rbuf.err) == 0) printf("余额为：%.2f\n",rbuf.money); else { printf("查询失败：%s\n",rbuf.err); } } void save(void)//存钱 { struct TAG buf,rbuf; memset(&buf,0,sizeof(buf)); memset(&rbuf,0,sizeof(rbuf)); buf.type = SAVE; printf("输入存钱的账号\n"); scanf("%d",&buf.id); printf("输入存钱账号的密码\n"); scanf("%s",buf.passwd); printf("输入要存钱的金额\n"); scanf("%f",&buf.money); msgsnd(id_ask,&buf,sizeof(buf)-sizeof(long),0); msgrcv(id_reply,&rbuf,sizeof(rbuf)-sizeof(long),SAVE,0); if(strlen(rbuf.err) == 0) printf("存钱成功，余额为：%.2f\n",rbuf.money); else { printf("存钱失败：%s\n",rbuf.err); } } void take(void)//取钱 { struct TAG buf,rbuf; memset(&buf,0,sizeof(buf)); memset(&rbuf,0,sizeof(rbuf)); buf.type = TAKE; printf("输入取钱的账号\n"); scanf("%d",&buf.id); printf("输入取钱账号的密码\n"); scanf("%s",buf.passwd); printf("输入要取钱的金额\n"); scanf("%f",&buf.money); msgsnd(id_ask,&buf,sizeof(buf)-sizeof(long),0); msgrcv(id_reply,&rbuf,sizeof(rbuf)-sizeof(long),TAKE,0); if(strlen(rbuf.err) == 0) printf("取钱成功，余额为：%.2f\n",rbuf.money); else { printf("取钱失败：%s\n",rbuf.err); } } void trans_w(void)//转账 { struct TAG buf2,buf1,rbuf1,rbuf2; memset(&buf1,0,sizeof(buf1)); memset(&buf2,0,sizeof(buf2)); memset(&rbuf1,0,sizeof(rbuf1)); memset(&rbuf2,0,sizeof(rbuf2)); buf1.type = TRANS; buf2.type = TRANS; printf("输入转出的账号\n"); scanf("%d",&buf1.id); printf("输入转出账号的密码\n"); scanf("%s",buf1.passwd); printf("输入要转出的金额\n"); scanf("%f",&buf1.money); printf("输入转入的账号\n"); scanf("%d",&buf2.id); msgsnd(id_ask,&buf1,sizeof(buf1)-sizeof(long),0); msgrcv(id_reply,&rbuf1,sizeof(rbuf1)-sizeof(long),TRANS,0); if(strlen(rbuf1.err) == 0) { printf("转出成功，余额为：%.2f\n",rbuf1.money); msgsnd(id_ask,&buf2,sizeof(buf2)-sizeof(long),0); msgrcv(id_reply,&rbuf2,sizeof(rbuf2)-sizeof(long),TRANS,0); if(strlen(rbuf2.err) == 0) { printf("转入成功\n"); } else { printf("转入失败：%s\n",rbuf2.err); } } else { printf("转出失败：%s\n",rbuf1.err); } }