Compilare: user.cpp: In function 'int df(long int)': user.cpp:22: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int main()': user.cpp:56: warning: format '%d' expects type 'int*', but argument 2 has type 'long int*' user.cpp:56: warning: format '%d' expects type 'int*', but argument 3 has type 'long int*' user.cpp:59: warning: format '%d' expects type 'int*', but argument 2 has type 'long int*' user.cpp:59: warning: format '%d' expects type 'int*', but argument 3 has type 'long int*' user.cpp:67: warning: format '%d' expects type 'int*', but argument 2 has type 'char*' user.cpp:91: warning: format '%d' expects type 'int', but argument 2 has type 'long int'