A number whose base is 16
is called a hexadecimal number. By base 16, it means we have only 16 digits to form all the numbers. They are 0
, 1
, 2
, 3
, 4
, 5
, 6
, 7
, 8
, 9
, A
, B
, C
, D
, E
and F
.
If we follow hexadecimal number system in daily life, this is how we count 20 apples:
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
10
11
12
13
14
A hexadecimal literal starts with 0x
and 0X
.
0x8A
0XABC