Compilare: user.c: In function ‘main’: user.c:11:12: warning: variable ‘g’ set but not used [-Wunused-but-set-variable] FILE *f, *g; ^ user.c:14:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &a); ^ user.c:15:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &b); ^