foo.cc:4:1: error: expected unqualified-id before '{' token
    4 | {
      | ^
foo.cc: In function 'int main()':
foo.cc:13:13: warning: the address of 'int Reverse(int)' will never be NULL [-Waddress]
   13 |   if(Reverse)
      |             ^
foo.cc:14:12: error: 'n' was not declared in this scope
   14 |      cout<<n<<" "
      |            ^

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