Compilare: user.cpp: In function ‘int main(int, char**)’: user.cpp:38:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (ii < text.length()) ^ user.cpp:40:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (ii < text.length() && ((text[ii] >= 'A' && text[ii] <= 'Z') || ^ user.cpp:48:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while ((ii < text.length()) && !((text[ii] >= 'A' && text[ii] <= 'Z') || ^