foo.cc:3:1: error: 'cin' does not name a type; did you mean 'sin'?
 cin >> a;
 ^~~
 sin
foo.cc:4:1: error: expected unqualified-id before 'if'
 if (a > 65 and a < 97)
 ^~
foo.cc:8:1: error: expected unqualified-id before 'else'
 else
 ^~~~