Compilare: user.cpp: In function ‘int main()’: user.cpp:49:72: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=] for(i=1;i<=u;++i) fprintf(out,"%.8llf %.8llf\n",p[s[i]].x,p[s[i]].y);//out<<p[s[i]].x<<' '<<p[s[i]].y<<'\n'; ^ user.cpp:49:72: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=] user.cpp:50:74: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=] for(i=u2-1;i>1;--i) fprintf(out,"%.8llf %.8llf\n",p[s[i]].x,p[s[i]].y);//out<<p[s2[i]].x<<' '<<p[s2[i]].y<<'\n'; ^ user.cpp:50:74: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=]