Compilare: user.cpp: In function ‘int main()’: user.cpp:14:16: warning: unused variable ‘d’ [-Wunused-variable] int v[6],k,d=0; ^ user.cpp:109:41: warning: ‘c2’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<l1<<" "<<c1<<" "<<l2<<" "<<c2; ^ user.cpp:109:21: warning: ‘c1’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<l1<<" "<<c1<<" "<<l2<<" "<<c2; ^ user.cpp:109:30: warning: ‘l2’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<l1<<" "<<c1<<" "<<l2<<" "<<c2; ^ user.cpp:109:12: warning: ‘l1’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<l1<<" "<<c1<<" "<<l2<<" "<<c2; ^