Compilare: main.cpp: In function 'int main()': main.cpp:14:30: warning: array subscript has type 'char' [-Wchar-subscripts] for (i=0;i<n;i++) vf[s[i]]++; ^ main.cpp:41:30: warning: array subscript has type 'char' [-Wchar-subscripts] if (j-sf[s[j]]<=r && j+sf[s[j]]<mx) ^ main.cpp:41:47: warning: array subscript has type 'char' [-Wchar-subscripts] if (j-sf[s[j]]<=r && j+sf[s[j]]<mx) ^ main.cpp:42:33: warning: array subscript has type 'char' [-Wchar-subscripts] mx=j+sf[s[j]]; ^ main.cpp:44:31: warning: array subscript has type 'char' [-Wchar-subscripts] else if (j-sf[s[j]]>r && j+sf[s[j]]<mx) mx=j+sf[s[j]]; ^ main.cpp:44:47: warning: array subscript has type 'char' [-Wchar-subscripts] else if (j-sf[s[j]]>r && j+sf[s[j]]<mx) mx=j+sf[s[j]]; ^ main.cpp:44:65: warning: array subscript has type 'char' [-Wchar-subscripts] else if (j-sf[s[j]]>r && j+sf[s[j]]<mx) mx=j+sf[s[j]]; ^ main.cpp:25:27: warning: 'nr' may be used uninitialized in this function [-Wmaybe-uninitialized] if (vf[i]!=0) nr--; ^