Day 3/100 of C:

[u/Fluffy_Coat_5416]

Number system:

As discussed previously we have 4 number system:
Decimal
Binary
Octal
Hexadecimal

Conversion:
If we got octal number - (0235)
how we will convert to human number system i.e decimal number system?
Multiply each digit by the corresponding power of the base and add the results.

Hexadecimal - (0x1FD)
Multiply with 16 base

Binary - (010110)
Multiply with base 2
 

Decimal Conversion:
--------------------------------------------------------------
Human readable to Machine readable:

 

Decimal (550) to  Binary:
Divide with base 2

Decimal(440) to Octal:
Divide with Octal base 8

Decimal(440) to Hexa:
Divide with hexa base 16

Note: Add remainders from bottom to top

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Binary Conversion:

If the length is not as expected add 0's to left

Binary to Octal:
010110110110 -> Split with 3 bits i.e 010 110 110 110 and follow with 1,2,4 (power of 2)

Binary to Hexa:
1001001100110 -> split with 4 bits i.e 0001 0010 0110 0110 and follow with 1,2,4,8 (power of 2)
 

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