Compilare: user.cpp: In function ‘void dist_max()’: user.cpp:60:24: warning: variable ‘ax’ set but not used [-Wunused-but-set-variable] { int i,j,dmax,dx,dy,ax,ay,bx,by; ^ user.cpp:60:27: warning: variable ‘ay’ set but not used [-Wunused-but-set-variable] { int i,j,dmax,dx,dy,ax,ay,bx,by; ^ user.cpp:60:30: warning: variable ‘bx’ set but not used [-Wunused-but-set-variable] { int i,j,dmax,dx,dy,ax,ay,bx,by; ^ user.cpp:60:33: warning: variable ‘by’ set but not used [-Wunused-but-set-variable] { int i,j,dmax,dx,dy,ax,ay,bx,by; ^