Compilare: main.cpp: In function 'int main()': main.cpp:23:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(bc.length() != n){ ~~~~~~~~~~~~^~~~ main.cpp:33:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(x == q.length()+1+bc.length()){ ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~