Compilare: user.cpp: In function 'int main()': user.cpp:9: warning: format '%d' expects type 'int*', but argument 3 has type 'long int*' user.cpp:9: warning: format '%d' expects type 'int*', but argument 4 has type 'long int*' user.cpp:17: warning: format '%d' expects type 'int', but argument 3 has type 'long int' user.cpp:4: warning: 'c' may be used uninitialized in this function