Compilare: user.c: In function ‘main’: user.c:17:13: warning: unused variable ‘j’ [-Wunused-variable] int n, i, j, s, cont, act; ^ user.c:18:10: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d%d", &n, &s) ; ^ user.c:23:12: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d", &s ) ; ^ user.c:28:10: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d", &s ) ; ^