Compilare: user.cpp: In function 'void df(long int)': user.cpp:21: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void df2(long int, long int)': user.cpp:32: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int main()': user.cpp:41: warning: format '%d' expects type 'int*', but argument 2 has type 'long int*' user.cpp:41: warning: format '%d' expects type 'int*', but argument 3 has type 'long int*' user.cpp:44: warning: format '%d' expects type 'int*', but argument 2 has type 'long int*' user.cpp:44: warning: format '%d' expects type 'int*', but argument 3 has type 'long int*' user.cpp:93: warning: format '%d' expects type 'int', but argument 2 has type 'long int'