Compilare: user.cpp: In function ‘int main()’: user.cpp:41: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:44: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:47: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:8: warning: unused variable ‘i’ user.cpp:8: warning: unused variable ‘j’ user.cpp:8: warning: unused variable ‘as’ user.cpp:9: warning: ‘d’ may be used uninitialized in this function