Compilare: user.cpp: In function ‘int main()’: user.cpp:21:14: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin >> v + 1; ^ user.cpp:24:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( order.size() == k ){ ^ user.cpp: In function ‘std::deque<char>::iterator cauta(char)’: user.cpp:17:1: warning: control reaches end of non-void function [-Wreturn-type] } ^