Compilare: user.cpp: In function ‘void infasuratoare()’: user.cpp:34:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 2; i < v.size(); ++i){ ^ user.cpp: In function ‘int main()’: user.cpp:57:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < v.size(); ++i){ ^ user.cpp:74:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < stck.size(); ++i) ^