What is the oflag used to open a file in mode read + write?O_RDWRO_WRONLYO_RDONLY
Question
What is the oflag used to open a file in mode read + write?
O_RDWR
O_WRONLY
O_RDONLY
Solution
To open a file in mode read and write in programming, you would typically use the O_RDWR
flag.
Explanation of Options
-
O_RDWR: This flag is used to open a file for both reading and writing. It allows you to read the file's contents and also modify it.
-
O_WRONLY: This flag is used to open a file for writing only. You cannot read from the file when it is opened with this flag.
-
O_RDONLY: This flag is used to open a file for reading only. You cannot write to the file when it is opened with this flag.
Conclusion
The correct flag for opening a file in read and write mode is O_RDWR
.
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