Compilare: user.cpp: In function ‘void genAll(long long unsigned int)’: user.cpp:39:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < sizeof(a) / sizeof(a[0]); i++) { ^ user.cpp: In function ‘int main()’: user.cpp:67:26: warning: unused variable ‘val’ [-Wunused-variable] unsigned long long val = cit(); ^ user.cpp:57:23: warning: variable ‘good’ set but not used [-Wunused-but-set-variable] unsigned long long good; ^