06-08-2009
Not so clear
Dera friend, I've also encountered the same problems in the past. I'm using the "n" qualifier for numeric fields to avoid such problems. Your example, though, has a dark point: you want numerical sort (-n) but there are non-numeric fields in the sort. Look the -k option too. Not helped a lot but it's nice to find someone to hear.
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LEARN ABOUT NETBSD
inttypes
INTTYPES(3) BSD Library Functions Manual INTTYPES(3)
NAME
inttypes -- standard fixed-size integer types
SYNOPSIS
#include <inttypes.h>
DESCRIPTION
The <inttypes.h> header describes a set of format specifier macros aimed to increase portability both within and across operating systems.
It includes the <stdint.h> header and extends it with additional facilities.
Each of the following macros expand to a character string literal containing the format specifier suitable for use within the format argument
of a formatted I/O function such as printf(3). Each macro contains an identifier (PRI or SCN), a conversion specifier, and a possible length
modifier.
The length modifier follows the integer types described in stdint(3):
int8_t uint8_t
int16_t uint16_t
int32_t uint32_t
int64_t uint64_t
int_least8_t uint_least8_t
int_least16_t uint_least16_t
int_least32_t uint_least32_t
int_least64_t uint_least64_t
int_fast8_t uint_fast8_t
int_fast16_t uint_fast16_t
int_fast32_t uint_fast32_t
int_fast64_t uint_fast64_t
intmax_t uintmax_t
intptr_t uintptr_t
The following format specifiers are defined for the fprintf(3) and fscanf(3) families, respectively:
PRI?8 SCN?8
PRI?16 SCN?16
PRI?32 SCN?32
PRI?64 SCN?64
PRI?LEAST8 SCN?LEAST8
PRI?LEAST16 SCN?LEAST16
PRI?LEAST32 SCN?LEAST32
PRI?LEAST64 SCN?LEAST64
PRI?FAST8 SCN?FAST8
PRI?FAST16 SCN?FAST16
PRI?FAST32 SCN?FAST32
PRI?FAST64 SCN?FAST64
PRI?MAX SCN?MAX
PRI?PTR SCN?PTR
The available conversion specifiers, ``?'' in above, are d and i for signed integers and o, u, x, and X for unsigned integers. The X is not
available for the fscanf(3) family. Without the length modifier these would correspond with %d, %i, %o, %u, %x, and %X, respectively.
EXAMPLES
The following example demonstrates typical usage:
uint64_t i = 123;
...
(void)printf("i = %"PRIu64"
", i);
SEE ALSO
printf(3), scanf(3), stdint(3)
STANDARDS
The <inttypes.h> header conforms to ISO/IEC 9899:1999 (``ISO C99'') and IEEE Std 1003.1-2001 (``POSIX.1'').
HISTORY
The <inttypes.h> header was first introduced in NetBSD 1.6.
BSD
March 21, 2010 BSD