Compilare: user.cpp: In function 'int main()': user.cpp:18: warning: format '%d' expects type 'int*', but argument 2 has type 'long int*' user.cpp:18: warning: format '%d' expects type 'int*', but argument 3 has type 'long int*' user.cpp:18: warning: format '%d' expects type 'int*', but argument 4 has type 'long int*' /tmp/ccs9ctEe.o: In function `main': user.cpp:(.text+0x97): warning: the `gets' function is dangerous and should not be used.