c语言图书馆管理系统

tf("******************************************\n");?printf("1:输入2:查询3:删除\n");?printf("4:借书5:还书0:退出\n");?printf("******************************************\n");?while(1)?{?printf("\n\n请输入功能序号:");?scanf("%d",&sele);?if(sele>=0&&sele<=5)?{?switch(sele)?{ case1:sr();break;?case2:cx();break; case3:sc();break;?case4:js();break;?case5:hs();break;?case0:jsh();break;?}?if(flag)?break;?printf("\n\n");?printf("*****************************************\n");?printf("1:输入2:查询3:删除\n");?printf("4:借书5:还书0:退出\n");?printf("*****************************************\n");?}?else?{ printf("输入错误请再次输入|\n\n"); printf("\n\n"); printf("************************************\n"); printf("1:输入2:查询3:删除\n"); printf("4:借书5:还书0:退出\n"); printf("************************************\n");?}?printf("\n\n让任意键继续\n");?}//wr_file();}