Compilare: user.cpp: In function ‘int main()’: user.cpp:8:23: warning: unused variable ‘d’ [-Wunused-variable] { int a , b , i,ca,cb,d,ok1,ok2; ^ user.cpp:8:29: warning: ‘ok2’ may be used uninitialized in this function [-Wmaybe-uninitialized] { int a , b , i,ca,cb,d,ok1,ok2; ^~~ user.cpp:8:25: warning: ‘ok1’ may be used uninitialized in this function [-Wmaybe-uninitialized] { int a , b , i,ca,cb,d,ok1,ok2; ^~~