Compilare: user.cpp: In function ‘int main()’: user.cpp:21:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] poz[s[i][j]]=1; ^ user.cpp:25:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(poz[i]!=0) ^ user.cpp:27:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] poz[i]=++dist; ^ user.cpp:37:39: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[i]=v[i]*BASE+poz[s[i][j]]; ^ user.cpp:14:9: warning: unused variable ‘val’ [-Wunused-variable] int val; ^