foo.cc: In function 'int main()':
foo.cc:8:15: warning: left operand of comma operator has no effect [-Wunused-value]
    8 |  for(int i=1;i<=10,i++)
      |              ~^~~~
foo.cc:8:23: error: expected ';' before ')' token
    8 |  for(int i=1;i<=10,i++)
      |                       ^
      |                       ;

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