const int TOTAL_PRINTERS = 2 //打印机总数 const int TOTAL_SCANNERS = 1 //扫描仪总数 const int TOTAL_MODEMS = 1 //调制解调器总数 const int TOTAL_CDS = 2 //光驱总数 const int TOTAL_MEMORIES = 1024 //内存大小-const int TOTAL_PRINTERS = 2 //total of printer const int T