Compilare: main.cpp: In function 'int main()': main.cpp:32:28: warning: array subscript has type 'char' [-Wchar-subscripts] if(elo[c[j]]=='.'){db++;elo[c[j]]=c[j];} ^ main.cpp:32:49: warning: array subscript has type 'char' [-Wchar-subscripts] if(elo[c[j]]=='.'){db++;elo[c[j]]=c[j];} ^ main.cpp:28:40: warning: iteration 35 invokes undefined behavior [-Waggressive-loop-optimizations] for(int i='A';i<='z';i++)elo[i]='.'; ~~~~~~^~~~ main.cpp:28:24: note: within this loop for(int i='A';i<='z';i++)elo[i]='.'; ~^~~~~