Compilare: user.cpp: In function ‘int main()’: user.cpp:15: warning: name lookup of ‘i’ changed user.cpp:5: warning: matches this ‘i’ under ISO standard rules user.cpp:13: warning: matches this ‘i’ under old rules user.cpp:16: warning: name lookup of ‘j’ changed user.cpp:5: warning: matches this ‘j’ under ISO standard rules user.cpp:14: warning: matches this ‘j’ under old rules