Subj : Re: Need help with converting float to string
To   : borland.public.cpp.borlandcpp
From : Sebastian Ledesma
Date : Fri May 21 2004 06:06 pm

Jeff:

I tipically use sprintf:

   data =  (low_byte + 256 * (char) high_byte) / 100.0;
   sprintf (string, "%f05.2", data);

Saludos
Sebastian

"Jeff Baker" <Jbaker0623@msn.com> escribió en el mensaje
news:40ae58aa@newsgroups.borland.com...
> I need some help. The function listed below compiles and works but the
> format it displays is not the kind I need. This function displays "data"
in
> exponential format and I need it to be in decimal format and no
suppression
> of trailing zeros. The ecvt() and fcvt() functions do exactly what I'm
> looking for, however neither of these functions insert the decimal in the
> string. Does anyone have an idea on how to get this done?
>
> Note: the data is alway in x.xx format.
>
> [start of code]
> #include <windows.h>
> #include <math.h>
>
> void DisplayData(HWND hwnd,BYTE low_byte,BYTE high_byte)
> {
> char string[255],label[]="Data";
> float data;
> HDC hdc;
> RECT rect;
> rect.left = 210; rect.top = 10; rect.right = 340; rect.bottom = 23;
> HBRUSH back_color = (HBRUSH)GetStockObject(BLACK_BRUSH);
> COLORREF text_color = RGB(127,255,127);
> HFONT hfnt,hOldFont;
> hdc = GetDC(hwnd);
> SetTextColor(hdc,text_color);
> SetBkMode(hdc,TRANSPARENT);
> hfnt = (HFONT)GetStockObject(SYSTEM_FONT);
> hOldFont =(HFONT)SelectObject(hdc,hfnt);
> if (hOldFont)
>    {
>    FillRect(hdc,&rect,back_color);
>    TextOut(hdc,rect.left,rect.top,label,strlen(label));
>    data = (FLOAT)((low_byte + (256 * high_byte)) / pow10(2));
>    gcvt(data,4,string);
>    TextOut(hdc,rect.left+80,rect.top,string,strlen(string));
>    SelectObject(hdc,hOldFont);
>    }
> UpdateWindow(hwnd);
> ReleaseDC(hwnd,hdc);
> }
> [end of code]
>
>

.