/in/foo.cc: In function 'int main()':
/in/foo.cc:6:2: error: expected ';' before 'int'
  int a[0]={x};
  ^~~
/in/foo.cc:7:13: error: too many initializers for 'int [0]'
  int b[0]={y};
             ^
/in/foo.cc:8:13: error: expected '}' before ']' token
  int c[0]={x];
             ^
/in/foo.cc:8:13: error: too many initializers for 'int [0]'
/in/foo.cc:8:13: error: expected ',' or ';' before ']' token
/in/foo.cc:9:8: error: 'a' was not declared in this scope
  cout<<a[0]<<b[0]<<c[0];
        ^