foo.cc: In function 'int main()':
foo.cc:24:21: error: 'ans' was not declared in this scope; did you mean 'abs'?
   24 |                     ans--;
      |                     ^~~
      |                     abs
foo.cc:31:18: error: 'x' was not declared in this scope
   31 |             cin>>x;
      |                  ^
foo.cc:37:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   37 |                 ans++;
      |                 ^~~
      |                 abs
foo.cc:39:23: error: 'ans' was not declared in this scope; did you mean 'abs'?
   39 |         printf("%d\n",ans);
      |                       ^~~
      |                       abs

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