Enum variables can not be assigned new values

Enum variables can be compared

Enumeration feature increase the power of C

All of above

Both can be used interchangeably

Scanf is delimited by end of line, while gets is not

Scanf is delimited by blank, while gets is not

All of above

2¹⁶-1

2¹⁵-1

2¹⁶

None of these

1

2

3

0

transfer the contents of s to b

transfer the content of b to s

exchange (swap) the contents of s and b

negate the contents of s and b