Compilare: user.cpp: In function ‘int main()’: user.cpp:44:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(viz[s[j]]) ^ user.cpp:45:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] s[j] = viz[s[j]]; ^ user.cpp:48:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] viz[s[j]] = current; ^ user.cpp:50:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] s[j] = viz[s[j]]; ^ user.cpp:70:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(viz[s[j]]) ^ user.cpp:71:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] s[j] = viz[s[j]]; ^ user.cpp:74:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] viz[s[j]] = current; ^ user.cpp:76:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] s[j] = viz[s[j]]; ^