Compilare: user.c: In function ‘main’: user.c:27:23: warning: unused variable ‘j’ [-Wunused-variable] int n, dx, dy, i, j, l, c; ^ user.c:29:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d%d", &n, &dx, &dy ); ^ user.c:32:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &l, &c ); ^