Y2 2.3 Plenary

Which type of shift should only be used on unsigned integers?

Answer explanation

A logical shift does not maintain the sign bit.

What type of shift can be used for signed or unsigned integers.

It maintains the sign bit when performing a shift right.

Answer explanation

Arithmetic shift maintains the sign bit when performing a shift right. The shift left works as a logical shift.

This error occurs when the number is too large to be stored by the computer.

This error occurs when the number is too small to be stored by the computer

What other error can occur when performing shifts.

• overflow into the sign bit

• collision error

• type error

• data error

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