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







share|improve this question

























  • Highly related: stackoverflow.com/questions/5431941/…

    – hellow
    Nov 27 '18 at 15:32






  • 5





    remove sets errno when 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 remove the entire file path?

    – static_cast
    Nov 27 '18 at 17:07
















-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







share|improve this question

























  • Highly related: stackoverflow.com/questions/5431941/…

    – hellow
    Nov 27 '18 at 15:32






  • 5





    remove sets errno when 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 remove the entire file path?

    – static_cast
    Nov 27 '18 at 17:07














-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







share|improve this question
















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






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 27 '18 at 15:35







Mancato Il Dottore

















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





    remove sets errno when 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 remove the entire file path?

    – static_cast
    Nov 27 '18 at 17:07



















  • Highly related: stackoverflow.com/questions/5431941/…

    – hellow
    Nov 27 '18 at 15:32






  • 5





    remove sets errno when 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 remove the 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












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);

}





share|improve this answer
























  • 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













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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






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);

}





share|improve this answer
























  • 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


















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);

}





share|improve this answer
























  • 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
















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);

}





share|improve this answer













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);

}






share|improve this answer












share|improve this answer



share|improve this answer










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





















  • 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






















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