How to convert a char into an int from 0 through 255?
Walter Bright
bright at Data-IO.COM
Tue Jan 9 06:43:06 AEST 1990
From: bright at Data-IO.COM (Walter Bright)
In article <498 at longway.TIC.COM> uunet!stealth.acf.nyu.edu!brnstnd (Dan Bernstein) writes:
<I'd like a solution that is both conformant and
<portable in the real world.
<Does (int) (unsigned int) ch do the trick?
No.
<What about (int) (unsigned char)?
Yes, assuming chars are 8 bits. But be warned, some older K&R compilers I've
run across do not do that cast correctly, even though the expression is correct.
I prefer using:
char c;
int i;
i = c & 0xFF; /* assuming chars >= 8 bits */
P.S. I don't care about 1's complement machines.
Volume-Number: Volume 18, Number 12
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