Compilare: user.cpp:51:4: warning: no newline at end of file user.cpp: In function 'int main()': user.cpp:19: warning: format '%u' expects type 'unsigned int*', but argument 3 has type 'long int*' user.cpp:47: warning: format '%u' expects type 'unsigned int', but argument 3 has type 'long int' user.cpp: In function 'long int nr(long int)': user.cpp:12: warning: control reaches end of non-void function user.cpp: In function 'int main()': user.cpp:21: warning: 'c' may be used uninitialized in this function