feof() detecting end of file one line before actual end [duplicate]

Question

This question already has answers here:

feof detecting false end of file (2 answers)

Closed 9 years ago.

I have a function that should read a file and detect when the file ends.

The function currently reads only the second last line and ends. Can someone please tell me what I'm doing wrong as I can't see it myself:

int readIn(TinCan* inCan, int toggle)
  {
  int ii, isFinished = 0;
  char fullName[20];
  sprintf(fullName, "Label_%d.txt", inCan->pid);

  FILE* fp; 
    fp = fopen(fullName, "r");

    if(fp==NULL) 
      {
      printf("Error: could not open %s\n", fullName);
      }

    else
      {
      for (ii=0; ii < ((inCan->ac)-1); ii++)
        {
        fscanf(fp, "%*d %*d %*d\n"); /*move through lines without scanning*/
        }
      fscanf(fp,"%d %d %d", &inCan->ac, &inCan->state, &inCan->time);
      }

    if (feof(fp) && (toggle == 1)) 
      {
      printf("File ended"); 
      writeLog(inCan);
      isFinished = 1;
      terminated++;
      }

  fclose(fp);
  return finished;
  }

Answer 1

I would expect your program to have a loop in it similar to:

while (!feof(fp)) {
...
    fscanf(fp, "%*d %*d %*d\n");
...
}

if you want to detect when the file ends.