Compilare: user.cpp: In function 'void df(long int)': user.cpp:24: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int main()': user.cpp:35: warning: format '%d' expects type 'int*', but argument 2 has type 'long int*' user.cpp:35: warning: format '%d' expects type 'int*', but argument 3 has type 'long int*' user.cpp:38: warning: format '%d' expects type 'int*', but argument 2 has type 'long int*' user.cpp:38: warning: format '%d' expects type 'int*', but argument 3 has type 'long int*'