View Compilation Error

0_0_13233998_18028.cpp: In function 'int main()':
0_0_13233998_18028.cpp:7:8: error: 'i' was not declared in this scope
  while(i--)
        ^
0_0_13233998_18028.cpp:12:16: error: expected primary-expression before 'continue'
    {cout<<"0"<<continue<<endl;}
                ^
0_0_13233998_18028.cpp:18:9: error: 'o' was not declared in this scope
  return o;
         ^