Question

Describe the modifier in C?

Answer 1

ıllıllı ʜᴇʀᴇ ɪs ʏᴏᴜʀ ᴀɴsᴡᴇʀ ıllıllı

Modifier is a prefix to the basic data type which is used to indicate the modification for storage space allocation to a variable.

Example– In 32-bit processor storage space for int data type is 4.When we use it with modifier the storage space change as follows.

Long int -> Storage space is 8 bit

Short int -> Storage space is 2 bit

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Answer 2

The difference between a UNIQUE constraint and a Primary Key is that per table you may only have one Primary Key but you may define more than one UNIQUE constraints. Primary Key constraints are not nullable. UNIQUE constraints may be nullable. ... A UNIQUE constraint will generate a unique NON-CLUSTERED INDEX.