printf problem

printf(" %04.2f", 4.2f );

Is what you want.

lol that was just an example

I actually want to format a floating point number, so it always appears the same length on screen

so lets say:

float f = 1.3f;

then I hoped that:
printf( "% 5.2f", f );

would display:
'' 1.30''
( with 2 spaces )

and not
''1.30''

and if f = 11.3f;
then I want it to display
'' 11.30''
( with one space )

and not
''11.30''

hmm hope that explains it a bit better.

consider using sprintf and c-string.

I forget the format, so I can't post an example.

edit:
Are you kidding? This works just fine:

float ee = 5.203f;
printf( "% 10.2f\n", ee );
printf( "% 10.2f\n", 500.2f );
printf( "% 10.2f\n", 23.21f );
printf( "% 10.2f\n", 90.593f );

Output:

      5.20
    500.20
     23.21
     90.59  

Remember, the format is: % [zero/space] [minimum width ] . [precision] [type]

[edited by - alnite on April 15, 2004 7:34:10 PM]

It looks like you don''t quite understand how printf works.

You''re putting an actual number after the % which you don''t need. If you want to display '' 4.24f'' (with a leading space, if I''m correct), then you use:
float f = 4.24f;
printf( " %.2f", f );
Notice that the printf doesn''t actually have the number 4.24 in it; it only has ".2" indicating that it should print out only the first two digits after the decimal point. And you put the percent right next to it; don''t put spaces in between. Put spaces before and after. It won''t interfere.

quote:

---

Original post by Promit
It looks like you don''t quite understand how printf works.

You''re putting an actual number after the % which you don''t need. If you want to display '' 4.24f'' (with a leading space, if I''m correct), then you use:
float f = 4.24f;
printf( " %.2f", f );
Notice that the printf doesn''t actually have the number 4.24 in it; it only has ".2" indicating that it should print out only the first two digits after the decimal point. And you put the percent right next to it; don''t put spaces in between. Put spaces before and after. It won''t interfere.

---

Actually, I think what he wants to do is to right align the number.

Thanks for your help alnite.

Kind of weird actually, when I take the number up from 4.2 to 5.2 or above it actually seems to work fine.

However I wasn''t really concentrating last night and the only problem is that the number 0 seems to be aligned as

''0.00''

instead of

'' 0.00''

as I want it when I put the number 4.2 in.

Anyway it seems to be fixed for what I want to do.