Compilare: user.cpp: In function ‘int main()’: user.cpp:24:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(a[s[i]]==0) ^ user.cpp:26:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] a[s[i]]=1; ^ user.cpp:36:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] mp[b[i]]=x; ^ user.cpp:40:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[i].x=i-mp[s[i]]; ^ user.cpp:43:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[i].y=i+mp[s[i]]; ^ user.cpp:48:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(mp[s[i]]>l) ^ user.cpp:51:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] l=mp[s[i]]; ^ user.cpp:54:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(mp[s[i]]==l) ^ /tmp/ccQBBnOl.o: In function `main': user.cpp:(.text.startup+0x6a): warning: the `gets' function is dangerous and should not be used.