Compilare: user.c: In function ‘main’: user.c:9:12: warning: unused variable ‘dif’ [-Wunused-variable] double dif,rez=1; ^ user.c:8:13: warning: unused variable ‘i’ [-Wunused-variable] int x,m,i; ^ user.c:11:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&x); ^ user.c:12:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&m); ^