# Conversion

rubna
Greenhorn
Posts: 25
Hi,
Thanks
rubna

Anonymous
Ranch Hand
Posts: 18944
Hi Rubna,
For Decimal to Octal:
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Hope you know that ,for Octal the base value is "8" and allowed digits are 0,1,2,3,4,5,6,7.
For example let us take decimal value 138
Divide this number by the Octal base value and quotient becomes not divisible by base value.
so 138/8 ie the remainder is 2 and Quotient is 17.
Then divide the quotient by 8 ie(17/8) the remainder is 1 and quotient is 2 and this can not be divided
again and so write the answers only including last quotient to the first remainder.
For example in this case 0212 is the Octal value for Decimal 138.

For Octal to Decimal:
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Powers of 8 will come into picture.
For example in this the Octal Number is 0212.
2 X 8^0 +1 X 8^1 + 2 X 8 ^ 2 ,the MSB ,here is the Octal indication digit. and it will not have any impact on
the conversion.
The result is 2 + 8 + 128 = 138.
Hope this can help you and for better understanding you have to work out by yourself.
For Hexam decimal use Base 16 and digits are 0 to 9,a,b,c,d,e,f(ie 0 to 15).
For Hexa decimal representation prefix is 0X(Zero X).
The conversion process is the same and so you can try on that.
Hope it helps you.
Thanks
Nirmal

Carl Trusiak
Sheriff
Posts: 3341
Originally posted by rubna:
Hi,
Thanks
rubna

You can use the methods in the Integer Wrapper class

rubna
Greenhorn
Posts: 25
Originally posted by Carl Trusiak:
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Thsnks a lot Carl.

rubna
Greenhorn
Posts: 25
Originally posted by Nirmal:
Hi Rubna,
For Decimal to Octal:

Thanks a lot.