Compilare: user.cpp: In function 'int main()': user.cpp:13: warning: format '%d' expects type 'int*', but argument 2 has type 'long int*' user.cpp:15: warning: comparison between signed and unsigned integer expressions user.cpp:16: warning: array subscript has type 'char' user.cpp:51: warning: format '%d' expects type 'int', but argument 2 has type 'long int'