Compilare: user.cpp: In function ‘int main()’: user.cpp:14:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] ++fa[a[i]]; ^ user.cpp:16:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] ++fb[b[i]]; ^ user.cpp:18:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(fa[a[i]]<fb[a[i]]){ ^ user.cpp:18:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(fa[a[i]]<fb[a[i]]){ ^ user.cpp:25:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(fb[a[i]]){ ^ user.cpp:26:48: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(j && a[i]<b[j-1] && fa[b[j-1]]>fb[b[j-1]]) ^ user.cpp:26:59: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(j && a[i]<b[j-1] && fa[b[j-1]]>fb[b[j-1]]) ^ user.cpp:27:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] ++fb[b[--j]]; ^ user.cpp:29:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] --fb[a[i]]; ^ user.cpp:31:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] --fa[a[i]]; ^