中南民族大学信管c语言课程设计图书信息管理系统设计书

}voidselect(){?system("cls"); voidjm();?voidinput();?voidoutput();?voidsearch();?voidxiugai();?voidshanchu();?intn;?printf("图书管理功能界面\n");menu:?jm();?scanf("%d",&n); getchar(); if(n==1||n==2||n==3||n==4||n==5||n==6)?{ switch(n) { case1:input();break; case2:output();break; case3:search();break; case4:xiugai();break; case5:shanchu();break; case6:exit(0);break; }?}?else?{ printf("输入错误,请重新输入!\n"); printf("输入你再次的选择:\n"); printf("\n"); printf("\n"); printf("\n"); gotomenu;?} }voiddl(){intn;?intk=0;zl: system("cls");?printf("\n");?printf("\n");?printf("\n");?printf("********欢迎光临图书管理系统********\n");?printf("\n");?printf("\n");?printf("请输入你的学号:"); scanf("%d",&n);?if(n==11056026) select();?else?{ if(k<2) { printf("输入错误,请重新输入!\n"); printf("输入你再次的选择:"); k++; gotozl; } else { printf("登录失败\n"); exit(0); }