Compilare: main.cpp: In function 'void treat(int)': main.cpp:40:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int st = 0, dr = 0; st < srt.size(); ++st) { ~~~^~~~~~~~~~~~ main.cpp:44:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] dr = (dr == srt.size() ? 0 : dr); } ~~~^~~~~~~~~~~~~ main.cpp: In function 'int cadran(const pii&)': main.cpp:35:13: warning: control reaches end of non-void function [-Wreturn-type] return 4; } ^