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is char unsigned 16 bit?
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saikrishna cinux
Ranch Hand
Joined: Apr 16, 2005
Posts: 689
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why datatype char is said to be unsigned ?
actually what is the difference between signed and unsigned?
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A = HARDWORK B = LUCK/FATE If C=(A+B) then C=SUCCESSFUL IN LIFE else C=FAILURE IN LIFE
SCJP 1.4
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Deepak Bala
Bartender
Joined: Feb 24, 2006
Posts: 6592
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A sign bit is used to indicate the sign of a number. Depending on whether the bit is 1 or 0 the number is considered positive or negative. A char need not be signed because it is used to represent unicode characters. Negative unicode characters just dont make sense. So a char is 16 bit unsigned.
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Tom Adams
Ranch Hand
Joined: Feb 07, 2003
Posts: 56
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The reason this is interesting is that by not supporting signed numbers a char can contain a larger number than say a short (also 16bit but supports signed numbers).
short can hold a number up to 2^15 - 1
char can hold a number uup to 2^16 - 1
Yes, chars are not meant to hold numbers...but you can assign a number to them.
See this post > http://www.coderanch.com/t/259063/java-programmer-SCJP/certification/char-representation-was-please-guide
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Tom
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saikrishna cinux
Ranch Hand
Joined: Apr 16, 2005
Posts: 689
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ok thanks but how many datatypes are there in java which has got both signed and unsigned ?
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subject: is char unsigned 16 bit?
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