Compilare: main.cpp: In constructor 'N::N()': main.cpp:9:46: warning: 'memset' used with length equal to number of elements without multiplication by element size [-Wmemset-elt-size] 9 | memset(this,0,sizeof(N)),memset(l,0,2); | ^ main.cpp: In function 'void A(N*)': main.cpp:22:14: warning: array subscript has type 'char' [-Wchar-subscripts] 22 | if(!r->l[*k]) | ^~ main.cpp:23:14: warning: array subscript has type 'char' [-Wchar-subscripts] 23 | r->l[*k]=new N(); | ^~ main.cpp:24:12: warning: array subscript has type 'char' [-Wchar-subscripts] 24 | A(r->l[*k++]); | ^~~~