Compilare: user.cpp: In function ‘void descompune(long long unsigned int)’: user.cpp:19:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i<n) {s[n-i-1]='a'; i++;} ^ user.cpp: In function ‘int main()’: user.cpp:34:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<n;i++) g<<s[i]; ^