problem with files

hoshangi · 04-26-2008, 05:34 AM

Hi
i have a problem with files below condition returns true:

File *fp=fopen("Myfile.txt","r+b");
if(fp==NULL)
printf("Error\n");

1-the file is exist
2-the file is Correct
3-the file is not open

this condition works 5 minuets without any problem but after 5 min the error is appear,
a timer open and close Myfile every 5 milisecondes

i don't know what is happen after 5 minuets that this condition returns true

please help me thanks

Guttorm · 04-26-2008, 05:39 AM

Hi

Instead of just printf("Error\n") why not print out a more meaningful message? Try e.g.

perror("fopen");

hoshangi · 04-26-2008, 12:27 PM

for your opinion what is may happen for the file?