CODEWITHSUNDEEP
cfile
Telmo Vaz
Telmo Vaz

Reputation: 57

Text File not oppening in C

I need to open this file, but it isn't opening and I dont know why:

#include<stdio.h>

void copy();

int main(void)
{
    copy();

    return 0;
}

void copy()
{
    FILE *src = fopen("srcc.txt", "r+");

    if(!src)
    {
        printf("It was not possible to open the file");
        return;
    }
}

It just pass the if condition and appear the message it was not possible to open the file and the file is not created.

Upvotes: 0

Views: 113

Answers (3)

Jimbo
Jimbo

Reputation: 4515

You could try using errno and strerror() to get a specific error code. For fopen() on most library implementations, the errno variable is also set to a system-specific error code on failure.

You could try something like:

#include <errno.h>
...
...
FILE *src = fopen("srcc.txt", "r+");
if(!src)
{
    printf("ERROR: %d - %s\n", errno, strerror(errno)); // <---- This will print out some 
                                                        // useful debug info for you
    printf("It was not possible to open the file");
    return;
}

errno.h will have a list of defines for the common error codes and strerror() will convert the errno to a string that you can print out...

Likely codes you might see, in this case, include some of the following (just copied verbatim from errno.h - i left out the actual values...):

#define EPERM  /* Operation not permitted */
#define ENOENT /* No such file or directory */
...
#define EACCES /* Permission denied */
...

Upvotes: 1

LTKD
LTKD

Reputation: 214

Chances are it can't find the file. I suggest making various copies of the file and putting them in various folders.

Upvotes: 0

Jim Balter
Jim Balter

Reputation: 16406

If the file exists, it's probably read-only ... you can't use "r+" on a file that isn't writable. Do you really need "r+" and not just "r"?

Upvotes: 0

Related Questions