How to read file in EA

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I tried to read a setting file.

I tried many ways, but failed. 

I do not know putting setting file in which folder.

 

You can refer to documentation for this.

int  FileOpen(
   string  file_name,           // File name
   int     open_flags,          // Combination of flags
   short   delimiter='\t',      // Delimiter
   uint    codepage=CP_ACP      // Code page
   );

open_flags

[in] combination of flags determining the operation mode for the file. The flags are defined as follows:
FILE_READ file is opened for reading
FILE_WRITE file is opened for writing
FILE_BIN binary read-write mode (no conversion from a string and to a string)
FILE_CSV file of csv type (all recorded items are converted to the strings of unicode or ansi type, and are separated by a delimiter)
FILE_TXT a simple text file (the same as csv, but the delimiter is not taken into account)
FILE_ANSI lines of ANSI type (single-byte symbols)
FILE_UNICODE lines of UNICODE type (double-byte characters)
FILE_SHARE_READ shared reading from several programs
FILE_SHARE_WRITE shared writing from several programs
FILE_COMMON location of the file in a shared folder for all client terminals \Terminal\Common\Files

The file is opened in the folder of the client terminal in the subfolder MQL5\files (or testing_agent_directory\MQL5\files in case of testing). If FILE_COMMON is specified among flags, the file is opened in a shared folder for all MetaTrader 5 client terminals.

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