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Clarify that the value of getc() etc. is an unsigned char converted

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to an int (as per the C standard) i.e. it can be passed straight to
isalpha() etc.

Approved by:	dwmalone (mentor)
MFC after:	3 days
This commit is contained in:
Tony Finch 2002-05-15 16:55:58 +00:00
parent 02f1d90bda
commit cfad593dbd
1 changed files with 4 additions and 0 deletions
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4
lib/libc/stdio/getc.3
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@ -91,6 +91,10 @@ from the stream pointed at by
If successful, these routines return the next requested object If successful, these routines return the next requested object
from the from the
.Fa stream . .Fa stream .
Character values are returned as an
.Li unsigned char
converted to an
.Li int .
If the stream is at end-of-file or a read error occurs, If the stream is at end-of-file or a read error occurs,
the routines return the routines return
.Dv EOF . .Dv EOF .