[C] writing floating point to file- coma instead of dot

slomek · 04-12-2007, 01:16 PM

I write number to file like this:

Code:

fprintf(file,"%f",float_number);

And I get e.g. 2,5000 instead of 2.5000. This causes many problems in reading this file by other programs. How to fix this?
I have gcc 4.1.2 and Debian Etch with Polish locales.

tuxdev · 04-12-2007, 01:52 PM

Switch to "C" locale sometime before this. Or complain to those other program's maintainers that they aren't respecting locale properly. The comma is the Right Thing to do in the Polish locale, so you really shouldn't need to change that.

slomek · 04-12-2007, 02:14 PM

Quote:

Switch to "C" locale sometime before this.

What do you mean? Or rather: how am I supposed to do this?

jlliagre · 04-12-2007, 02:43 PM

Quote:

Originally Posted by slomek

What do you mean? Or rather: how am I supposed to do this?

Here is one way:

Code:

export LC_NUMERIC=C

slomek · 04-12-2007, 03:23 PM

Thanks a lot!

That worked. I must have changed something with my locales. Now its OK.