Eroare de compilare: user.cpp: In function ‘int phi(int)’: user.cpp:4: error: ‘int phi(int)’ redeclared as different kind of symbol user.cpp:3: error: previous declaration of ‘unsigned int phi [1000002]’ user.cpp:6: warning: comparison between signed and unsigned integer expressions user.cpp:8: warning: comparison between signed and unsigned integer expressions user.cpp:9: error: ‘n’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:21: error: ‘phi’ cannot be used as a function