foo.cc: In function 'int main()':
foo.cc:15:11: error: expected initializer before '==' token
   15 |  int n,ans==0;
      |           ^~
foo.cc:19:4: error: 'ans' was not declared in this scope; did you mean 'abs'?
   19 |    ans++;
      |    ^~~
      |    abs
foo.cc:20:8: error: 'ans' was not declared in this scope; did you mean 'abs'?
   20 |  cout<<ans;
      |        ^~~
      |        abs
foo.cc: In function 'int Alan(int)':
foo.cc:12:1: warning: control reaches end of non-void function [-Wreturn-type]
   12 | }
      | ^

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