There'll actually be 256 combinations. The maximum value
that can be represented with a byte (8 - bits) is 255 but as
far as combinations are concerned 0 should also be
considered as well as 1, 2, 3, ..., 255. So there are total
256 combinations.

256 combinations.Byte contains the 8 Bits and bit contains
either the value 0 or 1.i.e.(2 raise to power 8 minus
1).The maximum number of value represented with a byte is 8
bits is 255 but 0 should also be considered as well as 1,
2, 3, ..., 255. So there are total
256 combinations.

if number of bite values is n, and length of the byte is k.
that means n = 2, k = 8.
for n even => n^k
(2^8 = 256)
for n odd => n^k - 1
(2^7 - 1 = 128-1 = 127)

Write a C program to calculate the salary of each employee
in your company. You
need to input the hours worked and the hourly rate. The
company pays 1.5 times
the hourly rate for all hours worked in excess of 48 hours.
Use the formulas below
to calculate the salary:
if employee worked less than 48 hours
salary = hours * rate;
if employee worked more than 48 hours
salary = 48.0 * rate + ( hours − 48.0 ) * rate * 1.5;
You are required to use a loop to produce the sample output
as given below.