Compilare: main.cpp: In function 'void Prepare()': main.cpp:48:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<p.size()-2;++i) ~^~~~~~~~~~~ main.cpp: In function 'void poligon()': main.cpp:55:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<p.size()-2;++i) ~^~~~~~~~~~~ main.cpp: In function 'void points_on_poligon()': main.cpp:76:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i<p.size() - 2;++i) ~^~~~~~~~~~~~~