foo.cc: In function 'int main()':
foo.cc:7:24: error: expected ';' before 'for'
    7 |         sort(n+1,n+1+3)
      |                        ^
      |                        ;
    8 |         for(int i=1;i<3;i++)
      |         ~~~             
foo.cc:8:21: error: 'i' was not declared in this scope
    8 |         for(int i=1;i<3;i++)
      |                     ^

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