Compilare: user.cpp:1:19: warning: extra tokens at end of #include directive user.cpp: In function 'int main()': user.cpp:47: warning: format '%ld' expects type 'long int', but argument 3 has type 'int' user.cpp:47: warning: format '%ld' expects type 'long int', but argument 4 has type 'int' user.cpp:47: warning: format '%ld' expects type 'long int', but argument 5 has type 'int' user.cpp:10: warning: 'k' may be used uninitialized in this function