foo.cc: In function 'int main()':
foo.cc:5:15: error: expected ';' before numeric constant
    5 | cout<<23<<"  "12;
      |               ^~
      |               ;
foo.cc:5:17: error: expected '}' at end of input
    5 | cout<<23<<"  "12;
      |                 ^
foo.cc:4:1: note: to match this '{'
    4 | {
      | ^

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