Compilare: user.cpp: In function ‘int main()’: user.cpp:14:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < s.size(); i++) { ^ user.cpp:16:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (m.size() > k) { ^ user.cpp:30:13: warning: statement has no effect [-Wunused-value] for (incmin; incmin <= sfmin; incmin++) ^ user.cpp:30:2: warning: ‘sfmin’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (incmin; incmin <= sfmin; incmin++) ^ user.cpp:31:18: warning: ‘incmin’ may be used uninitialized in this function [-Wmaybe-uninitialized] out << s[incmin]; ^