Compilare: user.cpp: In function 'int main()': user.cpp:56: warning: format '%d' expects type 'int', but argument 3 has type 'long int' user.cpp:56: warning: format '%02d' expects type 'int', but argument 4 has type 'long int' user.cpp: In function 'void Lee()': user.cpp:67: warning: 'sz' may be used uninitialized in this function