Compilare: user.cpp: In function ‘void Middle()’: user.cpp:70:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(Want != Stack[1].size()) ^ user.cpp:72:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(Want > Stack[1].size()) MoveFromFrontToStack(); ^ /tmp/ccNvdVqN.o: In function `main': user.cpp:(.text.startup+0x86): warning: the `gets' function is dangerous and should not be used.