Compilare: user.c: In function ‘main’: user.c:14:1: warning: format ‘%li’ expects argument of type ‘long int *’, but argument 3 has type ‘int *’ [-Wformat=] fscanf(r,"%li",&x0); ^ user.c:12:7: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(r,"%li",&n); ^ user.c:14:7: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(r,"%li",&x0); ^ user.c:17:12: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] {fscanf(r,"%li",&x); ^