Octal numbering system

The Octal numbering system is an old numbering system used in computers. It is a base eight numbering system that consists of eight digits: 0, 1, 2, 3, 4, 5, 6, 7. To convert from decimal to octal, you need to use binary in between. Binary serves as a bridge to facilitate the conversion between decimal and octal.

Table C.5. Represents both the octal and binary numbering systems.

Octal	Binary
0	0000
1	0001
2	0010
3	0011
4	0100
5	0101
6	0110
7	0111

Decimal to octal conversion

As explained earlier, to convert a decimal number to hexadecimal number, binary comes handy. First, the decimal number must be converted into binary. Next, the binary number...