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atof and locale

Posted on 2011-10-17
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Last Modified: 2012-08-13
Hi,

I changed the locale in my control-pannel to French so the number "123,456.50" should be displayed as "123 456,50" The locale settings
Now I put in my C++ program:
double f=atof("123 456,50").
So I should get it, but I get 126
Also, I did
double f=123456.50;
and sprintf(str,"%.02f",f);
I see in str (123456.50)  and not (123456,50 as I expected).


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Question by:VapiSoft
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Accepted Solution

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VapiSoft earned 0 total points
ID: 36979662
OK, I found the soultion.
You need to add:
setlocale(LC_NUMERIC,"");
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Expert Comment

by:dkhoo
ID: 36979725
Use the GetNumberFormat() to format your number string.

The following shows how the GetNumberFormat API is used to
format a given number string for the current user locale
(using the default settings for number formatting that the user has defined):

GetNumberFormat(LOCALE_USER_DEFAULT,  // locale (current user locale)
                               0,                                            // options
                               TEXT("1234567890.12345"), // input string (see MSDN for legal chars)
                               NULL,                                     // formatting information
                               g_szTemp,                             // formatted string buffer
                              MAX_STR);                             // size of buffer

(Taken from: http://msdn.microsoft.com/en-us/goglobal/bb688127.aspx)
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Author Comment

by:VapiSoft
ID: 36979804
Sorry,
This does not do what I want.
What I need is to get the float number from a string that is formatted using the current locale.

I found the solution:
You need to add
setlocale(LC_NUMERIC,"");
 
and then atof("123456,50) will return the right number.
BUT, it does not reconize the sapce, so "123 456,50) will return 123.
I can overcome this problem (by converting any number to a number without spaces).
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Author Closing Comment

by:VapiSoft
ID: 37010518
As I wrote, this soves most of the problem.
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