Problem of infinite loop in C

[Firon]

Here I have my loop:

  FILE * file = NULL; 
  fopen ( "file.txt", "a"); 
  number_centre long; 
  long l = 0; 
  scanf ( "% id", &  number_centre); 
  do 
  ( 
   l + +; 
   fprintf (file, "centre_% i.visble = false \ n", l); 
  ) While (l! =  number_centre);

and i realize that I am getting an infinite loop.

[Katty]

In your scanf "% ld" is not there and why do you put it instead of "% id"?

[Zecho]

FILE * file = NULL; 
 fopen ( "file.txt", "a");

This is incomplete, read your course files.

As mentioned above the function declaration for a long is %ld and not %i.

[Firon]

the file is missing because of the fclose or check if the file is open

but I have to set it before and then for the "% i" I tried to replace and I repeat it but does not change ...

[Dirk321]

Hi Firon,

To solve your program use Turbo C++ 3.0 IDE and trace your program by using functional key F7 and use add watch also. Then you can identify the problem very easily