Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: if(a==0xff) warning
From:	richard AT stardate DOT ca (Richard Sanders)
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Date:	10 Aug 2001 19:48:50 -0700
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To:	djgpp AT delorie DOT com
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>> char a;
>> 
>> a=0xff;
>> 
>> if(a==0xff)foo();
>> 
>> 
>> C:\>gcc foo.cpp -o foo.exe
>> foo.cpp: In function `void main()':
>> foo.cpp:598: warning: comparison is always false due to limited rang
>e of
>> data
>> type
>> 
>0xff=255, the limits of the char type is -127 - 127 so you can see how

So use unsigned char a; 0 -> 255

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