Compilare: user.cpp: In function ‘void checkl(int)’: user.cpp:47:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(!(0 <= a && a < puncte.size())) cout << "nope\n"; ^ user.cpp: In function ‘void checkr(int)’: user.cpp:52:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(!(0 < a && a <= puncte.size())) cout << "nope\n"; ^ user.cpp: In function ‘std::pair<Punct, Punct> DivImp(int, int)’: user.cpp:98:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < banda.size(); ++i) { ^ user.cpp:99:61: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = i + 1; j < i + 8 && j < banda.size(); ++j) { ^