Compilare: user.cpp: In function ‘void do_strmatch(const string&, const string&, int&, std::vector<int>&)’: user.cpp:27:49: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0, j = caut.size(); j < pi.size(); ++i, ++j){ ^ user.cpp:28:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(pi[j] >= caut.size()){ ^ user.cpp: In function ‘int main()’: user.cpp:49:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < poz.size(); ++i){ ^