Compilare: user.cpp: In function ‘int rezolva()’: user.cpp:32:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘void scrie()’: user.cpp:37:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < wrong.size(); i++) g << wrong[i] << ' '; ^ user.cpp:41:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < sol.size(); i++) g << sol[i]; ^