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Copyright 1991 David Jurgens |
Specifications for printf()
%[-][+][space][#][width][.prec][size]type
Field Description
- left justify
+ prefix positive numbers with '+', overrides blank
space prefix positive numbers with space
# prefix octal or hex with 0, (see manual for Turbo C)
width width of output string in total characters, a 0 before
width causes padding with zeros on left.
.prec decimal precision in characters
size F far pointer
N near pointer
h specifies short
l specifies long
L long double
type c single character
d signed decimal integer
e signed exponential, 'e' is output in string
E signed exponential, 'E' is output in string
f signed floating point in form of sddd.ddd
g formats e or f (depends on size), e is output
G formats e or f (depends on size), E is output
i signed decimal integer
n integer pointer
o unsigned octal integer
p void pointer; MS C always uses far pointers, in
Turbo C, size is dependent on memory model
s string pointer
u unsigned decimal integer
x unsigned integer in lower case hex format
X unsigned integer in upper case hex format
- if width or precision are specified as an asterisk '*', an int
from the argument list is used as the width or precision. If the
width is too small the field is expanded. Example:
int len = 5;
char *string = "This is a string"
printf("%*.*s", len, len, "string");
is functionally similar to a specification string of "%5.5s"
which prints a max of 5 characters of the string.
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printf specifiers |
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