Compilare: user.c: In function ‘sumadiv’: user.c:16:23: warning: variable ‘cx’ set but not used [-Wunused-but-set-variable] int d = 2,s = 1,p,cx; ^ user.c: In function ‘main’: user.c:43:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&n); ^ user.c:47:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %d",&a,&b); ^