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Translation Mode Constants
The _O_BINARY and _O_TEXT manifest constants determine the translation mode for files (_open and _sopen) or the translation mode for streams (_setmode).
The allowed values are:
Opens file in text (translated) mode. Carriage return – linefeed (CR-LF) combinations are translated into a single linefeed (LF) on input. Linefeed characters are translated into CR-LF combinations on output. Also, CTRL+Z is interpreted as an end-of-file character on input. In files opened for reading and reading/writing, fopen checks for CTRL+Z at the end of the file and removes it, if possible. This is done because using the fseek and ftell functions to move within a file ending with CTRL+Z may cause fseek to behave improperly near the end of the file.
Opens file in binary (untranslated) mode. The above translations are suppressed.
Same as _O_BINARY. Supported for C 2.0 compatibility.