Compilare: user.c: In function ‘main’: user.c:6:6: warning: unused variable ‘nr’ [-Wunused-variable] int nr, ok, ii, iii,n; ^ user.c:10:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &N, &Q); ^ user.c:14:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &a, &b); ^