/in/foo.cc: In function 'int main()':
/in/foo.cc:12:30: warning: self-comparison always evaluates to true [-Wtautological-compare]
   12 |                 for(int i=1;i<=i;i++) cout<<a[j]<<' ';
      |                             ~^~~
/in/foo.cc:12:47: error: 'j' was not declared in this scope
   12 |                 for(int i=1;i<=i;i++) cout<<a[j]<<' ';
      |                                               ^