Compilare: main.cpp: In function 'int main()': main.cpp:17:30: warning: array subscript has type 'char' [-Wchar-subscripts] for (i=0;i<n;i++) vf[s[i]]++; ^ main.cpp:40:48: warning: array subscript has type 'char' [-Wchar-subscripts] for (i=0;i<n;i++) cout<<'\n'<<'\n'<<sf[s[i]]<<' '<<i<<' '<<i-sf[s[i]]<<' '<<i+sf[s[i]]<<'\n'; ^ main.cpp:40:73: warning: array subscript has type 'char' [-Wchar-subscripts] for (i=0;i<n;i++) cout<<'\n'<<'\n'<<sf[s[i]]<<' '<<i<<' '<<i-sf[s[i]]<<' '<<i+sf[s[i]]<<'\n'; ^ main.cpp:40:90: warning: array subscript has type 'char' [-Wchar-subscripts] for (i=0;i<n;i++) cout<<'\n'<<'\n'<<sf[s[i]]<<' '<<i<<' '<<i-sf[s[i]]<<' '<<i+sf[s[i]]<<'\n'; ^ main.cpp:28:27: warning: 'nr' may be used uninitialized in this function [-Wmaybe-uninitialized] if (vf[i]!=0) nr--; ^