Compilare: user.cpp: In function 'int main()': user.cpp:14: warning: format '%ld' expects type 'long int*', but argument 2 has type 'int*' user.cpp:35: warning: format '%ld' expects type 'long int', but argument 2 has type 'int' /tmp/cc1N6rvp.o: In function `main': user.cpp:(.text+0x6a): warning: the `gets' function is dangerous and should not be used.