• 2022-07-23
    若要对Data类中重载的加法运算符成员函数进行声明,下列选项中不正确的是_____。 (多选题) (多选题) (多选题)
    A: Data +(Data);
    B: Data operator+(Data);
    C: Data +operator(Data);
    D: operator+(Data,Data);
  • A,C,D

    内容

    • 0

      下列选项中,用于存储数据库文件的路径是( )。 A: 【data】->【databases】 B: 【data】->【data】 C: 【data】->【data】->【项目包名全路径】->【databases】 D: 【data】->【data】->【项目包名全路径】

    • 1

      有如下程序 #include intchange(int*data) { *data=*data%2; return(*data)+1; } main() { intdata=12; change(&data); printf("%d,",data); data=change(&data); printf("%d,",data); } 程序运行后的输出结果是()

    • 2

      What is stored in the database is( ). A: data B: data mode C: links between data D: data and the connection between data

    • 3

      The data collected by the statistical survey can be original data or secondary data. The relationship between the original data and secondary data is ( ) A: The original data comes from the grass-roots units, and the secondary data comes from the superior units B: Secondary data is processed from original data C: There is no necessary connection between the original data and the secondary data D: There is no difference between primary data and secondary data

    • 4

      需要挂载NFS服务器(192.168.2.6)名为/data的目录,挂载点为 /mnt/data,正确的命令是( ) A: mount -a B: mount //192.168.2.6/data /mnt/data C: mount -tnfs1921682.6:/data mnt/data D: mount 192.168.2.6:/data /mnt/data