Metrologic Optimus R, Programming Manual

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88 "C" Programming Guide For Optimus S/R
type (required) A letter that indicates the type of variable being printed
(see below).
Flags Meaning
- Left justify output value. The default is right justification.
+ If the output value is a numerical one, print a '+' or '-' character
according to the sign of the value. A '-' character is always printed
for a negative value no matter this flag is specified or not.
blank Positive numerical values are prefixed with blank spaces. This flag
is ignored if the + flag also appears.
# When used in printing variables of type o, x, or X (see below),
non-zero output values are prefixed with 0, 0x, or 0X respectively.
Type Expected Input
c
d
i
o
u
x
X
s
Single character
Signed decimal integer
Signed decimal integer
Octal digits without sign
Unsigned decimal integer
Hexadecimal digits using lower case letter
Hexadecimal digits using upper case letter
A null terminated character string
Return It returns the character count that sent to the LCD.
putchar
Purpose To display a character on the LCD.
Syntax int putchar (int c);
int c; /* character being sent to the LCD */
Example putchar ('A');
Description This routine sends a character specified in the argument c to the LCD at the
current cursor position. The cursor is moved accordingly.
Return
It always returns 1.
See Also puts