Changing base of a number

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Suppose we want to convert 0xFACE into decimal value.


echo "ibase=16; obase=A; FACE" | bc


'ibase' is input number base.
'obase' is output number base in ibase number.(10 is A in hexadecimal format).
'FACE' is the number.

when we dont specify any of the value, its assumed to be 10.

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