Compilare: user.cpp: In function ‘int main()’: user.cpp:16:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(i=0;i<n;i++) ap[s[i]]++; ^ user.cpp:20:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(apare[s[i]]==0) ^ user.cpp:22:55: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(stiva[capat]>s[i] && ap[stiva[capat]]>1 && capat>=0) ^ user.cpp:24:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] ap[stiva[capat]]--; ^ user.cpp:25:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] apare[stiva[capat]]=0; ^ user.cpp:31:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] apare[s[i]]=1; ^