Compilare: user.cpp: In function ‘double arie(punct, punct, punct)’: user.cpp:21:20: warning: variable ‘x’ set but not used [-Wunused-but-set-variable] { int y1,y2,x1,x2,x,y; ^ user.cpp:21:22: warning: variable ‘y’ set but not used [-Wunused-but-set-variable] { int y1,y2,x1,x2,x,y; ^ user.cpp: In function ‘int main()’: user.cpp:112:25: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=] fprintf (g,"%llf\n",max2); ^