Compilare: main.cpp: In function 'int main()': main.cpp:81:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < stiva.size() - 1; i++) ~~^~~~~~~~~~~~~~~~~~ main.cpp:56:11: warning: variable 'st' set but not used [-Wunused-but-set-variable] punct st = A[0], dr = A[n - 1]; ^~ main.cpp:56:22: warning: variable 'dr' set but not used [-Wunused-but-set-variable] punct st = A[0], dr = A[n - 1]; ^~