Compilare: user.cpp: In function 'int main()': user.cpp:42: warning: format '%ld' expects type 'long int*', but argument 2 has type 'int*' user.cpp:45: warning: format '%ld' expects type 'long int*', but argument 2 has type 'int*' user.cpp:49: warning: format '%ld' expects type 'long int*', but argument 2 has type 'int*' user.cpp:49: warning: format '%ld' expects type 'long int*', but argument 3 has type 'int*' user.cpp:74: warning: format '%ld' expects type 'long int', but argument 2 has type 'int' user.cpp: In function 'int insert(Nod*&, int)': user.cpp:27: warning: control reaches end of non-void function user.cpp: In function 'int free(Nod*&)': user.cpp:20: warning: control reaches end of non-void function