Compilare: user.cpp: In function ‘int main()’: user.cpp:47:16: warning: unused variable ‘i’ [-Wunused-variable] int s[N+1],i; ^ user.cpp: In function ‘int cbin(int*, int, int, int)’: user.cpp:27:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int cbin2(int*, int, int, int)’: user.cpp:43:1: warning: control reaches end of non-void function [-Wreturn-type] } ^