Compilare: user.cpp: In function ‘int main()’: user.cpp:10: warning: unused variable ‘i’ user.cpp:10: warning: unused variable ‘j’ user.cpp:10: warning: unused variable ‘nr’ user.cpp:10: warning: unused variable ‘x’ user.cpp:10: warning: unused variable ‘max’ user.cpp:10: warning: unused variable ‘gr’ user.cpp:10: warning: unused variable ‘w’ user.cpp:10: warning: unused variable ‘h’ user.cpp:10: warning: unused variable ‘e’ user.cpp:10: warning: unused variable ‘o’ user.cpp:10: warning: unused variable ‘ok’ user.cpp:10: warning: unused variable ‘r’ user.cpp:10: warning: unused variable ‘nrgr’