/in/foo.cc: In function 'int main()':
/in/foo.cc:20:8: warning: array subscript is above array bounds [-Warray-bounds]
     b[i]=sum;
     ~~~^
/in/foo.cc:41:19: warning: array subscript is above array bounds [-Warray-bounds]
  cout<<"Sun:"<<b[6]<<endl;
                   ^
/in/foo.cc:41:19: warning: 'b[6]' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<<"Sun:"<<b[6]<<endl;
                   ^