C++ Windows fopen() vs _fsopen()
MSDN for fopen() says " returns a pointer to the open file." For _fsopen() - " returns a pointer to the stream. ". Both return FILE*.
Can someone explain the difference, if any?
c++ windows
asked Nov 27 '18 at 5:06
valecavaleca
52
add a comment |
MSDN for fopen() says " returns a pointer to the open file." For _fsopen() - " returns a pointer to the stream. ". Both return FILE*.
Can someone explain the difference, if any?
c++ windows
asked Nov 27 '18 at 5:06
valecavaleca
52
1
_fsopen(): Opens a stream with file sharing.
– Swordfish
Nov 27 '18 at 5:21
Just poorly defined terminology - "file" and "stream" are synonymous here.
– Harun
Nov 27 '18 at 5:31
Look at cplusplus.com/reference/cstdio/FILE Object type that identifies a stream.
– S.M.
Nov 27 '18 at 5:46
It is an alternative for the dangerous fopen(), which allows anybody else to write to the file at the same time. Also consider fopen_s(), the C11 Annex K alternative that is more likely to be portable.
– Hans Passant
Nov 27 '18 at 17:17
add a comment |
MSDN for fopen() says " returns a pointer to the open file." For _fsopen() - " returns a pointer to the stream. ". Both return FILE*.
Can someone explain the difference, if any?
c++ windows
asked Nov 27 '18 at 5:06
valecavaleca
52
MSDN for fopen() says " returns a pointer to the open file." For _fsopen() - " returns a pointer to the stream. ". Both return FILE*.
Can someone explain the difference, if any?
c++ windows
c++ windows
asked Nov 27 '18 at 5:06
valecavaleca
52
asked Nov 27 '18 at 5:06
valecavaleca
52
asked Nov 27 '18 at 5:06
valecavaleca
52
asked Nov 27 '18 at 5:06
valecavaleca
52
asked Nov 27 '18 at 5:06
valecavaleca
52
52
1
_fsopen(): Opens a stream with file sharing.
– Swordfish
Nov 27 '18 at 5:21
Just poorly defined terminology - "file" and "stream" are synonymous here.
– Harun
Nov 27 '18 at 5:31
Look at cplusplus.com/reference/cstdio/FILE Object type that identifies a stream.
– S.M.
Nov 27 '18 at 5:46
It is an alternative for the dangerous fopen(), which allows anybody else to write to the file at the same time. Also consider fopen_s(), the C11 Annex K alternative that is more likely to be portable.
– Hans Passant
Nov 27 '18 at 17:17
add a comment |
1
_fsopen(): Opens a stream with file sharing.
– Swordfish
Nov 27 '18 at 5:21
Just poorly defined terminology - "file" and "stream" are synonymous here.
– Harun
Nov 27 '18 at 5:31
Look at cplusplus.com/reference/cstdio/FILE Object type that identifies a stream.
– S.M.
Nov 27 '18 at 5:46
It is an alternative for the dangerous fopen(), which allows anybody else to write to the file at the same time. Also consider fopen_s(), the C11 Annex K alternative that is more likely to be portable.
– Hans Passant
Nov 27 '18 at 17:17
1
1
_fsopen(): Opens a stream with file sharing.– Swordfish
Nov 27 '18 at 5:21
_fsopen(): Opens a stream with file sharing.– Swordfish
Nov 27 '18 at 5:21
Just poorly defined terminology - "file" and "stream" are synonymous here.
– Harun
Nov 27 '18 at 5:31
Just poorly defined terminology - "file" and "stream" are synonymous here.
– Harun
Nov 27 '18 at 5:31
Look at cplusplus.com/reference/cstdio/FILE Object type that identifies a stream.
– S.M.
Nov 27 '18 at 5:46
Look at cplusplus.com/reference/cstdio/FILE Object type that identifies a stream.
– S.M.
Nov 27 '18 at 5:46
It is an alternative for the dangerous fopen(), which allows anybody else to write to the file at the same time. Also consider fopen_s(), the C11 Annex K alternative that is more likely to be portable.
– Hans Passant
Nov 27 '18 at 17:17
It is an alternative for the dangerous fopen(), which allows anybody else to write to the file at the same time. Also consider fopen_s(), the C11 Annex K alternative that is more likely to be portable.
– Hans Passant
Nov 27 '18 at 17:17
add a comment |
1 Answer
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The difference is that _fsopen() takes one extra parameter than fopen() and that is shflag.
This flag specifies the type of sharing allowed. You can Permit/Deny the Read/Write to the file in different combinations.
answered Nov 27 '18 at 6:30
P.WP.W
14.9k31452
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1 Answer
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active
oldest
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oldest
votes
The difference is that _fsopen() takes one extra parameter than fopen() and that is shflag.
This flag specifies the type of sharing allowed. You can Permit/Deny the Read/Write to the file in different combinations.
answered Nov 27 '18 at 6:30
P.WP.W
14.9k31452
add a comment |
The difference is that _fsopen() takes one extra parameter than fopen() and that is shflag.
This flag specifies the type of sharing allowed. You can Permit/Deny the Read/Write to the file in different combinations.
answered Nov 27 '18 at 6:30
P.WP.W
14.9k31452
add a comment |
The difference is that _fsopen() takes one extra parameter than fopen() and that is shflag.
This flag specifies the type of sharing allowed. You can Permit/Deny the Read/Write to the file in different combinations.
answered Nov 27 '18 at 6:30
P.WP.W
14.9k31452
The difference is that _fsopen() takes one extra parameter than fopen() and that is shflag.
This flag specifies the type of sharing allowed. You can Permit/Deny the Read/Write to the file in different combinations.
answered Nov 27 '18 at 6:30
P.WP.W
14.9k31452
answered Nov 27 '18 at 6:30
P.WP.W
14.9k31452
answered Nov 27 '18 at 6:30
P.WP.W
14.9k31452
answered Nov 27 '18 at 6:30
P.WP.W
14.9k31452
14.9k31452
add a comment |
add a comment |
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1
_fsopen(): Opens a stream with file sharing.– Swordfish
Nov 27 '18 at 5:21
Just poorly defined terminology - "file" and "stream" are synonymous here.
– Harun
Nov 27 '18 at 5:31
Look at cplusplus.com/reference/cstdio/FILE Object type that identifies a stream.
– S.M.
Nov 27 '18 at 5:46
It is an alternative for the dangerous fopen(), which allows anybody else to write to the file at the same time. Also consider fopen_s(), the C11 Annex K alternative that is more likely to be portable.
– Hans Passant
Nov 27 '18 at 17:17