Compilare: user.cpp: In function ‘void fil(int, int, int)’: user.cpp:15:9: warning: unused variable ‘x’ [-Wunused-variable] int x,y,d; ^ user.cpp:15:11: warning: unused variable ‘y’ [-Wunused-variable] int x,y,d; ^ user.cpp: In function ‘int main()’: user.cpp:70:41: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<camere<<"\n"<<M<<"\n"<<x<<" "<<y<<" "<<M2+1; ^ user.cpp:70:33: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<camere<<"\n"<<M<<"\n"<<x<<" "<<y<<" "<<M2+1; ^