Compilare: main.cpp: In function 'int main()': main.cpp:24:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(poz < semne.size()) ~~~~^~~~~~~~~~~~~~ main.cpp:26:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(poz + l < semne.size() && semne[poz] == semne[poz + l]) ~~~~~~~~^~~~~~~~~~~~~~