What is the difference between logical left shift and logical right shift?

Left shift (<<) moves bits toward the high end, filling vacated low bits with 0; logical right shift (>>) moves bits toward the low end, filling vacated high bits with 0.

x << 3:  Argument x:  01100010
         Result:      00010000  (shifted left 3, filled 0s)

x >> 2:  Argument x:  10100010
         Result:      00101000  (shifted right 2, filled 0s)

Effect:

• Left shift by k = multiply by 2^k
• Right shift by k = divide by 2^k (for unsigned)