Compilare: main.cpp: In function 'int main()': main.cpp:26:16: warning: array subscript has type 'char' [-Wchar-subscripts] ap[x[i]]++; ^ main.cpp:32:19: warning: array subscript has type 'char' [-Wchar-subscripts] ap2[x[i-1]]++; ^ main.cpp:37:25: warning: array subscript has type 'char' [-Wchar-subscripts] if (ap2[y[j]] > ap2[cmax]) ^ main.cpp:39:25: warning: array subscript has type 'char' [-Wchar-subscripts] if (ap2[y[j]] < ap2[cmin]) ^ main.cpp:20:19: warning: unused variable 'k' [-Wunused-variable] int i, lg, j, k, nr = 0, lg2; ^ main.cpp:28:17: warning: iteration 25 invokes undefined behavior [-Waggressive-loop-optimizations] if (ap[i] > 0) ~~~~^ main.cpp:27:19: note: within this loop for (i = 97; i<=122; i++) ~^~~~~