fopen does not create a file

Question

Hi.

I have a very simple program to create a file. (I am trying to learn). Even though the code returns(0) it never creates a file. I can create the same file in the same directory using powershell. Any suggestions would be appreciated.

Here is the code:

#include <stdio.h>

#include <stdlib.h>

 int main ()

 {

int num;

  

FILE * fptr;

  

fptr = fopen ("C:\\test\Myprogram.txt", "w");

  

if (fptr == NULL)

{

  

printf ("Error!");

  

exit (1);

}

  

printf ("Enter num: ");

  

scanf ("%d", &num);

  

fprintf (fptr, "%d", num);

  

fclose (fptr);

  

return 0;

}

Answer 1

The code successfully creates a file for me in OnlineGDB.

However, please remember that your local Windows and the Linux (of OnlineGDB) operating systems and the C language on them may work slightly differently.

Please note, that you're missing a '\' from your path. Your path should correctly be: "C:\\test\\Myprogram.txt".

If that still does not allow your code to work, make sure that the C:\test directory exists as fopen() does not create the directory hierarchy for you.

Good luck!

Comments

thank you. I will fix that error and try again.