Question

I just want to output 3 integers from the file. Why this doesn’t work? I get -1079184140 and similar.

int main(int argc, char *argv[]) 
{

   FILE* stream  = fopen(argv[2], "r");

   char line[80];

  for (int i = 0; i < 3; i++)
  {
    fgets(line, 80, stream);
    printf("%d \n", line);
  } 

  fclose(streamForInput);

}

Answer 1

I would use sscanf.

int number;
sscanf (line, "%d", &number);
printf ("%d \n", number);

That will pull the first integer on a line. This is not the most secure or robust way, but that is out of scope.

PS:

fclose(streamForInput);

Should be:

fclose(stream);