Compilare: user.cpp: In function ‘int main()’: user.cpp:16:48: warning: format ‘%lf’ expects argument of type ‘double*’, but argument 2 has type ‘long double*’ [-Wformat=] for(i=1;i<=n;i++)scanf("%lf%lf",&x[i],&y[i]); ^ user.cpp:16:48: warning: format ‘%lf’ expects argument of type ‘double*’, but argument 3 has type ‘long double*’ [-Wformat=] user.cpp:19:29: warning: format ‘%lf’ expects argument of type ‘double’, but argument 2 has type ‘long double’ [-Wformat=] printf("%.5lf",abs(Aria)); ^