Compilare: user.cpp: In function ‘int main()’: user.cpp:19:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1 ; i <= n - p - 2 ; ++i) ^ user.cpp:25:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = n ; i >= n - p - 1 ; --i) ^ user.cpp:26:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i != y) ^