how to parse a read text file

I am also a newbie to Symbian. You can try with the following code.

_LIT(KMyFile,"C:\\temp\\a.txt"); // change with your file name

RFile tempFile;
RFs fs;
User::LeaveIfError( fs.Connect() );
CleanupClosePushL( fs );

TInt err=tempFile.Open(fs, KMyFile, EFileShareExclusive | EFileWrite);

if (err==KErrNotFound) // file does not exist - create it

{
User::LeaveIfError( tempFile.Create( fs, KMyFile, EFileShareExclusive | EFileWrite));
// Write to current file position: start of file
_LIT8(KWriteBuf,"R1333.003"); // write R1333.003 to file
tempFile.Write(KWriteBuf);
}
CleanupClosePushL(tempFile);

TBuf8<6> readBuf1;
tempFile.Read(0,readBuf1); // reads from the first position in file

TBuf<10> buf;
buf.Copy(readBuf1);

Now you have the value R1333.003 in buf.

Thanks
Justin