I am unable to open a file in c

Question

i created a text file in d: drive named abc. I am unable to open it. Please tell me how to do so.

#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
void main()
{
    FILE *fp;
    clrscr();
    fp = fopen("D:/abc.txt","r");
    if(fp == NULL)
    {
        printf("\nCannot open");
        getch();
        exit(1);
    }
    fclose(fp);
    getch();
}

Answer 1

If you are working with TurboC put that file in the BIN directory of TC. And specify the path as fp = fopen("abc.txt","r"); instead of any other alternate path.

Answer 2

The Next time , try to make the error more specific by using perror() function. Perror() will interpret the error code , this will help you to waste less time , trying to find the type of error.

add this in your code...

if(fp == NULL)
{
perror(fp);
}

On running i got the perror message

No such file or directory. (since i ran the program , and tried to read a file , without creating it first)

See , if this was the same problem , in your case

Answer 3

fp = fopen("D:/abc.txt","r");

should be

fp = fopen("D:\\abc.txt","r");

in use \ in path instead of / in Windows and extra \ for escape sequence.

EDIT:

As you commented to others answers that fp = fopen("D:\\abc.txt","r"); also not working then check what is name actually. You might given probably wrong name by mistake, check whether you have error like this.

(1) open command prompt
(2) use DIR command to print name of file:

c:\Users\name> D:
D:\> DIR
 Volume in drive D is FUN BOX
 Volume Serial Number is B48A-3CE7

 Directory of d:\

 27-02-2013  19:23                 0 abc.txt.txt
 26-02-2013  22:05    <DIR>          BOLLYWOOD MOVIES
 27-02-2013  19:31                 0 x
           2 File(s)              0 bytes
           1 Dir(s)  11,138,654,208 bytes free

file name is abc.txt.txt but when you see this in folder extension doesn't appears and file name looks abc.txt

I am Linux user and I normally do this mistake in Windows. That's why. May be it help you!

Answer 4

You file-path looks a little bit strange. Change it to

fp = fopen("D:\\abc.txt","r");

This might work.

Apart from that, include <errno.h> and check for it, if it has failed.

Answer 5

correct the path, it should be "D:\\abc.txt"

Answer 6

You have a typo, try

 fp = fopen("D:\\abc.txt","r");

instead.

Or if the file is in the same folder as the program:

 fp = fopen("abc.txt","r");