# Printf "%-05d\\n", 1

**URL:** <https://www.ruby-forum.com/t/printf-05d-n-1/127267>\
**Category:** Development\
**Created:** [January 27, 2008, 3:11pm UTC](https://www.ruby-forum.com/t/printf-05d-n-1/127267 "2008-01-27T15:11:11Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Tanaka\_A](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/c67d28/32.png) [@Tanaka\_A](https://www.ruby-forum.com/u/Tanaka_A)\
**Post date:** [January 27, 2008, 3:11pm UTC](https://www.ruby-forum.com/t/printf-05d-n-1/127267/1 "2008-01-27T15:11:11Z")

</div>

e$B0J2\<$N$h$&$Ke(B printf e$B$Ge(B %-05d e$B$Ke(B 1 e$B$rM?$($?7k2L$Oe(B  
00001 e$B$K$Je(B  
e$B$j$^$9!#e(B

% ./ruby -ve ‘printf “[%-05d]\n”, 1’  
ruby 1.9.0 (2008-01-26 revision 15257) [i686-linux]  
[00001]

e$B$7$+$7!"e(BC e$B$N5,3J$G$O%U%i%0$H$7$Fe(B - e$B$He(B 0  
e$B$NN\>J}$rM?$($?\>l9g!“e(B  
0 e$B$rL5;k$9$k$3$H$K$J$C$F$\*$j!”$3$l$H$O0[$J$k7k2L$K$J$j$^$9!#e(B

% cat t.c  
#include \<stdio.h\>

int main(int argc, char \*\*argv)  
{  
printf("[%-05d]\n", 1);  
return 0;  
}  
% gcc -Wall t.c  
t.c: In function ‘main’:  
t.c:5: warning: ‘0’ flag ignored with ‘-’ flag in printf  
format  
% ./a.out  
[1]

gcc e$B$,$=$&$$$&7Y9p$r=P$7$F$$$k$N$O5,3J$,$=$&$J$C$F$$$k$+$i$Ge(B  
e$B$9$,!"$=$N5,3J$I$\*$je(B 0 e$B$OL5;k$5$l!"e(B-  
e$B$K$h$k:85M$a$K$J$C$F$$e(B  
e$B$^$9!#e(B