Readwrite modes

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Readwrite modes are used to specify the mode of reading/writing of a file, by passing one of them to the function fopen() as the parameter flags.


Constant - Value - Description
O_READ - 0 - Read only.
O_READWRITE - 1 - Read and write. Also called O_RDWR.
O_WRITE - 2 - Write only.
O_ZREAD - 3 - Read using Z compression.
O_ZWRITE - 4 - Write using Z compression.