Compilare: main.cpp: In member function 'void MARE::init_scalar(int)': main.cpp:26:23: warning: array subscript has type 'char' [-Wchar-subscripts] 26 | digit[++digit[0]] = scalar % 10; | ^~~~~~~~~~ main.cpp: In member function 'void MARE::prod_scalar(int)': main.cpp:46:19: warning: array subscript has type 'char' [-Wchar-subscripts] 46 | digit[++digit[0]] = t % 10; | ^~~~~~~~~~ main.cpp: In member function 'void MARE::adun_MARE(const MARE&)': main.cpp:62:19: warning: array subscript has type 'char' [-Wchar-subscripts] 62 | digit[++digit[0]] = t % 10; | ^~~~~~~~~~