Compilare: main.cpp: In function 'int main()': main.cpp:22:27: warning: array subscript has type 'char' [-Wchar-subscripts] 22 | lg[a[1][strlen(a[1])-1]]=1; | ~~~~~~~~~~~~~~~~~~~^ main.cpp:23:26: warning: array subscript has type 'char' [-Wchar-subscripts] 23 | c[a[1][strlen(a[1])-1]]=1; | ~~~~~~~~~~~~~~~~~~~^ main.cpp:27:15: warning: array subscript has type 'char' [-Wchar-subscripts] 27 | if(lg[first]+1>lg[last]) | ^~~~~ main.cpp:27:27: warning: array subscript has type 'char' [-Wchar-subscripts] 27 | if(lg[first]+1>lg[last]) | ^~~~ main.cpp:29:16: warning: array subscript has type 'char' [-Wchar-subscripts] 29 | lg[last]=lg[first]+1; | ^~~~ main.cpp:29:25: warning: array subscript has type 'char' [-Wchar-subscripts] 29 | lg[last]=lg[first]+1; | ^~~~~ main.cpp:30:20: warning: array subscript has type 'char' [-Wchar-subscripts] 30 | d[i]=c[first]; | ^~~~~ main.cpp:31:15: warning: array subscript has type 'char' [-Wchar-subscripts] 31 | c[last]=i; | ^~~~