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Beginner: conversions

Posted on 2000-05-04
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Last Modified: 2010-04-02
cannot convert a string to a float.

CString name, val;

        for (int iii = 0; iii < 15; iii++)
        {
               
                name.Format("windspp %d",iii);
                val = app->GetProfileString("profile",name, "");
                        ppdata[iii] = "%f", val
        }

ppdata is an array of floats.
the registry entry that is read is a number 12,67 for example but i can only get it out as a string if i am right (?).
Now how do I convert a string to a float ??

could someone copy/paste a list of possible conversions here as i allways fall across one i cannot do.

thanks for helping.
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Question by:peter_b
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7 Comments
 

Author Comment

by:peter_b
ID: 2777228
ppdata[iii] = "%f", val
this line is an error of course but thats what i would like to do...
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Accepted Solution

by:
bxt earned 50 total points
ID: 2777431
Have you tried the atof function

ppdata[iii] = atof(val)
       

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Author Comment

by:peter_b
ID: 2777718
well theres a loss of data from double to float but should be ok.
Can you gie me some other conversion possibilities I am allways hanging with this ?
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Expert Comment

by:bxt
ID: 2778000
atof should return a double so you shouldn't see any loss of data if you make your array an array of double.

There is also the strtod function

char *stringstop;
ppdata[iii] = strtod(val,&stringstop);

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Author Comment

by:peter_b
ID: 2778070
okok great thanks but is there a list of all functions i can use somewhere ? the MS help is awfull...
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Expert Comment

by:bxt
ID: 2778128
If you have MSDN go to the index tab and type 'data conversion routines' or
'string manipulation routines' for a full list of functions that should be of interest to you.

If you don't have MSDN go to

http://msdn.microsoft.com/library/devprods/vs6/visualc/vccore/_crt_data_conversion.htm
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Author Comment

by:peter_b
ID: 2778161
thanks you helped me alot !!
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