TheSCLfile_open() function opens a file for subsequent reading.

file_open(fileOpenStatus,     // file_open_status variable          fileVar,            // file variable          fileName,           // file name, String variable          fileMode)           // file mode (must be read_mode)

fileOpenStatus is a variable of typefile_open_status. It receives the status result of the file open operation. It's values can be

mode_error       // no longer usedname_error       // file not foundopen_ok          // file successfully openedstatus_error     // file already opened

fileVar is a variable of typefile. It is the internal variable that tracks the file state. It is used in other file methods likeendfile andfile_close.

fileName is a string containing the file name. It must contain the complete absolute path.

fileMode is a constant of typefile_mode, however at this time the value must be "read_mode"

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