Assume int a,x=0,y=0;
a). a= 10 && ++x && y++

Values a=0,x =1,y=1 [expected ]


 b). a= 10 && ++x || y++
 Values a=1 ,x=1,y=0 [short circuit
  ,expected ]

 c). a= 10 || ++x || y++
 Values a=1 , x=0, y=0 [short
  circuit ]

1. a = 10 && y++

 Values a =0, x=0(default didn't
 change ), y=1 [ expected no short
 circuit y is incremented later and
 hence a =0 ]