Compilare: user.cpp: In function ‘void readVector(std::vector<int>&, size_t)’: user.cpp:14:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < sz; ++i) ^ user.cpp: In function ‘void norm(std::vector<int>&)’: user.cpp:24:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); i++ ) ^ user.cpp: In function ‘bool isBigger(const std::vector<int>&, const std::vector<int>&)’: user.cpp:32:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < aSz; ++i) ^ user.cpp: In function ‘void subtr(std::vector<int>&, const std::vector<int>&)’: user.cpp:51:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = b.size(); i < a.size(); i++) ^