foo.cc: In function ‘int main()’:
foo.cc:10:16: error: expected ‘)’ before ‘;’ token
   10 |         dor(i=0;i<=9;i++)
      |            ~   ^
      |                )
foo.cc:10:18: warning: statement has no effect [-Wunused-value]
   10 |         dor(i=0;i<=9;i++)
      |                 ~^~~
foo.cc:10:25: error: expected ‘;’ before ‘)’ token
   10 |         dor(i=0;i<=9;i++)
      |                         ^
      |                         ;