C ++ error set: Expected unqualified-ID before 'using'

 

Today I wrote an occi C ++ProgramThe result is an inexplicable error after compilation. The information is as follows:

G ++-C tdbpro. cpp-I/u01/Oracle/rdbms/public-I ./
Tdbpro. cpp: 3: Error: Expected unqualified-ID before 'using'

 

The first line of tdbpro. cppCodeContains the header file. The second row is empty, and the third row is the using namespace STD:

# Include "tdbpro. H"

 

Using namespace STD;

 

 

At first, I thought it was a problem to upload FTP files from windows to Linux. I directly went to Linux and used VI to check the source file. Finally, I found that the class defined in the header file contains no extra points:

 

Class xxxx

{

...

}; // This is the semicolon