Compilare: main.cpp: In function 'int main()': main.cpp:15:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<=strlen(s)-1;i++) ~^~~~~~~~~~~~~ main.cpp:21:58: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(cif>coada.back() && (coada.size()+(N-i-1))>=N-K) ~~~~~~~~~~~~~~~~~~~~~~^~~~~ main.cpp:27:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(coada.size()>N-K) ~~~~~~~~~~~~^~~~