Compilare: user.cpp: In function ‘void preprocesare()’: user.cpp:52:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0; j <= word[1].size(); j++) ^ user.cpp: In function ‘int main()’: user.cpp:97:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(stiva[i].size() == nivel + 1) ^ user.cpp:112:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(nr.size() == nivel + 1) ^