Compilare: user.cpp: In function ‘int main()’: user.cpp:62:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int I = 0; I < caractere.size(); I++) ^ user.cpp:89:55: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int I = 0, maxim = 0; I < caractere.size(); I++) ^ user.cpp:112:62: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k = 0; k < voisins.size(); k++) ^ user.cpp:117:62: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k = 0; k < voisins.size(); k++) ^