Compilare: main.cpp: In function 'int main()': main.cpp:120:25: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 120 | if(deq.dfront() == i-k) | ~~~~~~~~~~~~~^~~~~~ main.cpp: In member function 'int Deque::dfront()': main.cpp:91:1: warning: control reaches end of non-void function [-Wreturn-type] 91 | } | ^ main.cpp: In member function 'int Deque::dback()': main.cpp:96:1: warning: control reaches end of non-void function [-Wreturn-type] 96 | } | ^