Why doesnt the remove function work here?
-1
I want to scan from an existing savefile, and delete it afterwards so I can create a new savefile of the same name later, however this code doesnt delete anyhthing:
void readsave()
{
FILE* f;
int prior;
fopen_s(&f, "save.txt", "r");
while (!feof(f))
{
fscanf_s(f, "%d", &prior);
createNew(prior);
}
fclose(f);
remove("save.txt");
}
this returns -1 when saved to int:
remove("save.txt");
c
asked Nov 27 '18 at 15:30
Mancato Il DottoreMancato Il Dottore
3416
|
show 4 more comments
-1
I want to scan from an existing savefile, and delete it afterwards so I can create a new savefile of the same name later, however this code doesnt delete anyhthing:
void readsave()
{
FILE* f;
int prior;
fopen_s(&f, "save.txt", "r");
while (!feof(f))
{
fscanf_s(f, "%d", &prior);
createNew(prior);
}
fclose(f);
remove("save.txt");
}
this returns -1 when saved to int:
remove("save.txt");
c
asked Nov 27 '18 at 15:30
Mancato Il DottoreMancato Il Dottore
3416
Highly related: stackoverflow.com/questions/5431941/…
– hellow
Nov 27 '18 at 15:32
5
removesetserrnowhen it returns -1; check that for more information.
– Govind Parmar
Nov 27 '18 at 15:32
2
include errno.h and call strerror(errno), what does it say?
– Simone De Vita
Nov 27 '18 at 15:33
1
you may have permission to write but no permission to remove that file
– phuclv
Nov 27 '18 at 15:56
1
Couple things to try... Can you delete the file from the command line? Can you delete the file if you sendremovethe entire file path?
– static_cast
Nov 27 '18 at 17:07
|
show 4 more comments
-1
-1
-1
I want to scan from an existing savefile, and delete it afterwards so I can create a new savefile of the same name later, however this code doesnt delete anyhthing:
void readsave()
{
FILE* f;
int prior;
fopen_s(&f, "save.txt", "r");
while (!feof(f))
{
fscanf_s(f, "%d", &prior);
createNew(prior);
}
fclose(f);
remove("save.txt");
}
this returns -1 when saved to int:
remove("save.txt");
c
asked Nov 27 '18 at 15:30
Mancato Il DottoreMancato Il Dottore
3416
I want to scan from an existing savefile, and delete it afterwards so I can create a new savefile of the same name later, however this code doesnt delete anyhthing:
void readsave()
{
FILE* f;
int prior;
fopen_s(&f, "save.txt", "r");
while (!feof(f))
{
fscanf_s(f, "%d", &prior);
createNew(prior);
}
fclose(f);
remove("save.txt");
}
this returns -1 when saved to int:
remove("save.txt");
c
c
asked Nov 27 '18 at 15:30
Mancato Il DottoreMancato Il Dottore
3416
asked Nov 27 '18 at 15:30
Mancato Il DottoreMancato Il Dottore
3416
edited Nov 27 '18 at 15:35
Mancato Il Dottore
asked Nov 27 '18 at 15:30
Mancato Il DottoreMancato Il Dottore
3416
asked Nov 27 '18 at 15:30
Mancato Il DottoreMancato Il Dottore
3416
asked Nov 27 '18 at 15:30
Mancato Il DottoreMancato Il Dottore
3416
3416
Highly related: stackoverflow.com/questions/5431941/…
– hellow
Nov 27 '18 at 15:32
5
removesetserrnowhen it returns -1; check that for more information.
– Govind Parmar
Nov 27 '18 at 15:32
2
include errno.h and call strerror(errno), what does it say?
– Simone De Vita
Nov 27 '18 at 15:33
1
you may have permission to write but no permission to remove that file
– phuclv
Nov 27 '18 at 15:56
1
Couple things to try... Can you delete the file from the command line? Can you delete the file if you sendremovethe entire file path?
– static_cast
Nov 27 '18 at 17:07
|
show 4 more comments
Highly related: stackoverflow.com/questions/5431941/…
– hellow
Nov 27 '18 at 15:32
5
removesetserrnowhen it returns -1; check that for more information.
– Govind Parmar
Nov 27 '18 at 15:32
2
include errno.h and call strerror(errno), what does it say?
– Simone De Vita
Nov 27 '18 at 15:33
1
you may have permission to write but no permission to remove that file
– phuclv
Nov 27 '18 at 15:56
1
Couple things to try... Can you delete the file from the command line? Can you delete the file if you sendremovethe entire file path?
– static_cast
Nov 27 '18 at 17:07
Highly related: stackoverflow.com/questions/5431941/…
– hellow
Nov 27 '18 at 15:32
Highly related: stackoverflow.com/questions/5431941/…
– hellow
Nov 27 '18 at 15:32
5
5
remove sets errno when it returns -1; check that for more information.– Govind Parmar
Nov 27 '18 at 15:32
remove sets errno when it returns -1; check that for more information.– Govind Parmar
Nov 27 '18 at 15:32
2
2
include errno.h and call strerror(errno), what does it say?
– Simone De Vita
Nov 27 '18 at 15:33
include errno.h and call strerror(errno), what does it say?
– Simone De Vita
Nov 27 '18 at 15:33
1
1
you may have permission to write but no permission to remove that file
– phuclv
Nov 27 '18 at 15:56
you may have permission to write but no permission to remove that file
– phuclv
Nov 27 '18 at 15:56
1
1
Couple things to try... Can you delete the file from the command line? Can you delete the file if you send
remove the entire file path?– static_cast
Nov 27 '18 at 17:07
Couple things to try... Can you delete the file from the command line? Can you delete the file if you send
remove the entire file path?– static_cast
Nov 27 '18 at 17:07
|
show 4 more comments
1 Answer
1
active
oldest
votes
1
While the return value of -1 from remove is not exactly helpful in determining why it failed, you can get more detailed information by examining errno, which is a designated error-holding variable for various standard library function calls.
The function perror will print a string detailing the code in errno:
#include <stdio.h> // perror
#include <stdlib.h> // exit, remove
#include <errno.h> // errno
if(remove("file") == -1)
{
perror("remove");
exit(EXIT_FAILURE);
}
answered Nov 27 '18 at 15:40
Govind ParmarGovind Parmar
12.2k53463
it says remove: Permission denied...perhaps I am supposed to save the file somewhere separately?
– Mancato Il Dottore
Nov 27 '18 at 15:46
@MancatoIlDottore It could also be that the file can't be deleted since it's still open. Hard to say since your environment is not known to us
– Govind Parmar
Nov 27 '18 at 16:24
add a comment |
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1 Answer
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1 Answer
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1
While the return value of -1 from remove is not exactly helpful in determining why it failed, you can get more detailed information by examining errno, which is a designated error-holding variable for various standard library function calls.
The function perror will print a string detailing the code in errno:
#include <stdio.h> // perror
#include <stdlib.h> // exit, remove
#include <errno.h> // errno
if(remove("file") == -1)
{
perror("remove");
exit(EXIT_FAILURE);
}
answered Nov 27 '18 at 15:40
Govind ParmarGovind Parmar
12.2k53463
it says remove: Permission denied...perhaps I am supposed to save the file somewhere separately?
– Mancato Il Dottore
Nov 27 '18 at 15:46
@MancatoIlDottore It could also be that the file can't be deleted since it's still open. Hard to say since your environment is not known to us
– Govind Parmar
Nov 27 '18 at 16:24
add a comment |
1
While the return value of -1 from remove is not exactly helpful in determining why it failed, you can get more detailed information by examining errno, which is a designated error-holding variable for various standard library function calls.
The function perror will print a string detailing the code in errno:
#include <stdio.h> // perror
#include <stdlib.h> // exit, remove
#include <errno.h> // errno
if(remove("file") == -1)
{
perror("remove");
exit(EXIT_FAILURE);
}
answered Nov 27 '18 at 15:40
Govind ParmarGovind Parmar
12.2k53463
it says remove: Permission denied...perhaps I am supposed to save the file somewhere separately?
– Mancato Il Dottore
Nov 27 '18 at 15:46
@MancatoIlDottore It could also be that the file can't be deleted since it's still open. Hard to say since your environment is not known to us
– Govind Parmar
Nov 27 '18 at 16:24
add a comment |
1
1
1
While the return value of -1 from remove is not exactly helpful in determining why it failed, you can get more detailed information by examining errno, which is a designated error-holding variable for various standard library function calls.
The function perror will print a string detailing the code in errno:
#include <stdio.h> // perror
#include <stdlib.h> // exit, remove
#include <errno.h> // errno
if(remove("file") == -1)
{
perror("remove");
exit(EXIT_FAILURE);
}
answered Nov 27 '18 at 15:40
Govind ParmarGovind Parmar
12.2k53463
While the return value of -1 from remove is not exactly helpful in determining why it failed, you can get more detailed information by examining errno, which is a designated error-holding variable for various standard library function calls.
The function perror will print a string detailing the code in errno:
#include <stdio.h> // perror
#include <stdlib.h> // exit, remove
#include <errno.h> // errno
if(remove("file") == -1)
{
perror("remove");
exit(EXIT_FAILURE);
}
answered Nov 27 '18 at 15:40
Govind ParmarGovind Parmar
12.2k53463
answered Nov 27 '18 at 15:40
Govind ParmarGovind Parmar
12.2k53463
answered Nov 27 '18 at 15:40
Govind ParmarGovind Parmar
12.2k53463
answered Nov 27 '18 at 15:40
Govind ParmarGovind Parmar
12.2k53463
12.2k53463
it says remove: Permission denied...perhaps I am supposed to save the file somewhere separately?
– Mancato Il Dottore
Nov 27 '18 at 15:46
@MancatoIlDottore It could also be that the file can't be deleted since it's still open. Hard to say since your environment is not known to us
– Govind Parmar
Nov 27 '18 at 16:24
add a comment |
it says remove: Permission denied...perhaps I am supposed to save the file somewhere separately?
– Mancato Il Dottore
Nov 27 '18 at 15:46
@MancatoIlDottore It could also be that the file can't be deleted since it's still open. Hard to say since your environment is not known to us
– Govind Parmar
Nov 27 '18 at 16:24
it says remove: Permission denied...perhaps I am supposed to save the file somewhere separately?
– Mancato Il Dottore
Nov 27 '18 at 15:46
it says remove: Permission denied...perhaps I am supposed to save the file somewhere separately?
– Mancato Il Dottore
Nov 27 '18 at 15:46
@MancatoIlDottore It could also be that the file can't be deleted since it's still open. Hard to say since your environment is not known to us
– Govind Parmar
Nov 27 '18 at 16:24
@MancatoIlDottore It could also be that the file can't be deleted since it's still open. Hard to say since your environment is not known to us
– Govind Parmar
Nov 27 '18 at 16:24
add a comment |
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Highly related: stackoverflow.com/questions/5431941/…
– hellow
Nov 27 '18 at 15:32
5
removesetserrnowhen it returns -1; check that for more information.– Govind Parmar
Nov 27 '18 at 15:32
2
include errno.h and call strerror(errno), what does it say?
– Simone De Vita
Nov 27 '18 at 15:33
1
you may have permission to write but no permission to remove that file
– phuclv
Nov 27 '18 at 15:56
1
Couple things to try... Can you delete the file from the command line? Can you delete the file if you send
removethe entire file path?– static_cast
Nov 27 '18 at 17:07