/in/foo.cc: In function 'int main()':
/in/foo.cc:32:28: error: 'i' was not declared in this scope
   for(int x=10000;x<=99999;i++)
                            ^
/in/foo.cc:45:30: error: 'i' was not declared in this scope
   for(int x=100000;x<=999999;i++)
                              ^
/in/foo.cc:59:32: error: 'i' was not declared in this scope
   for(int x=1000000;x<=9999999;i++)
                                ^