Doubles to Strings for Edit Box Output

[Brent Lamborn]

One last question.. Why will this work... strLabels[3].Format("%.2f\n", dblLabels[3]); But this won't?:wtf: for (int i = 1; i < 26; i++) strLabels[i].Format("%.2f\n", dblLabels[i]); "It has become appallingly obvious that our technology has exceeded our humanity." - Albert Einstein (1879-1955) "I think there is a world market for maybe five computers." - Thomas Watson (1874-1956), Chairman of IBM, 1943 "640K ought to be enough for anybody." - Bill Gates (1955-), in 1981 "Half this game is ninety percent mental." - Yogi Berra

[Gary Kirkham]

I don't see anything wrong with what you posted. What does it do? Gary Kirkham A working Program is one that has only unobserved bugs I thought I wanted a career, turns out I just wanted paychecks

[Brent Lamborn]

The output on the screen shows -9255 for every string no matter what is in my dblLabels array when I use a for loop. If I put the literal index in it works but that would be too many lines of code. Heres the whole thing again just in case: void CGraphView::OnBnClickedBtnplot() { GetDlgItem(IDC_PICT)->GetWindowRect(pictRect); ScreenToClient(pictRect); //Array of label strings CStringArray strLabels; strLabels.SetSize(26); //Array of double labels [1-26] one for each has mark //Don't use all of them though double* dblLabels = GetLabelVals(); for (int i = 1; i < 26; i++) strLabels[i].Format("%.2f\n", dblLabels[i]); SetDlgItemText(IDC_EDITINTERSECT, "INT"); SetDlgItemText(IDC_EDITY1, strLabels[3]); SetDlgItemText(IDC_EDITY2, strLabels[6]); SetDlgItemText(IDC_EDITY3, strLabels[9]); SetDlgItemText(IDC_EDITX1, strLabels[12]); SetDlgItemText(IDC_EDITX2, strLabels[15]); SetDlgItemText(IDC_EDITX3, strLabels[18]); SetDlgItemText(IDC_EDITX4, strLabels[21]); SetDlgItemText(IDC_EDITX5, strLabels[24]); InvalidateRect(pictRect); } "It has become appallingly obvious that our technology has exceeded our humanity." - Albert Einstein (1879-1955) "I think there is a world market for maybe five computers." - Thomas Watson (1874-1956), Chairman of IBM, 1943 "640K ought to be enough for anybody." - Bill Gates (1955-), in 1981 "Half this game is ninety percent mental." - Yogi Berra

[Gary Kirkham]

Should work... Run it in debug mode and check each value set by this call student() wrote: double* dblLabels = GetLabelVals(); make sure each value in dblLabels is set properly. I ran the following on my machine at it worked perfectly

CStringArray strLabels;
strLabels.SetSize(26);

double arr\[\] = { 0 , 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 
	             11, 12, 13, 14, 15, 16, 17, 18, 18, 20,
				 21, 22, 23, 26, 25 };


for (int i = 1; i < 26; i++)
{
	strLabels\[i\].Format("%.2f\\n", arr\[i\]);
	AfxMessageBox(strLabels\[i\]);
}

Other than that I don't know what to tell you Gary Kirkham A working Program is one that has only unobserved bugs I thought I wanted a career, turns out I just wanted paychecks

[Brent Lamborn]

Gary... Yeah something weird is going on. I ran it in the debugger and my dbl array is fine. The weird part is that after only one iteration of the for loop, all 26 of the values in the string array are set to -9255 plus about ten other numbers after that. I don't understand how one iteration could change all the values in the array. Anyway..Thanks for your help..I really appreciate it. "It has become appallingly obvious that our technology has exceeded our humanity." - Albert Einstein (1879-1955) "I think there is a world market for maybe five computers." - Thomas Watson (1874-1956), Chairman of IBM, 1943 "640K ought to be enough for anybody." - Bill Gates (1955-), in 1981 "Half this game is ninety percent mental." - Yogi Berra

[Gary Kirkham]

Just for kicks, try using the CStringArray GetAt and SetAt functions instead of the [] operator. Gary Kirkham A working Program is one that has only unobserved bugs I thought I wanted a career, turns out I just wanted paychecks

[Gary Kirkham]

You can also us a vector. Here is an example

vector strLabels;
strLabels.reserve(26);
CString string;

strLabels.push\_back("");  // this takes care of index 0

for (int i = 1; i < 26; i++)
{
	string.Format("%.2f\\n", dblLabels\[i\]);
	strLabels.push\_back(string);
}

put this at the top of you cpp file #include using std::vector; Gary Kirkham A working Program is one that has only unobserved bugs I thought I wanted a career, turns out I just wanted paychecks

[Gary Kirkham]

the first line of code sould look like this vector<CString>strLabels; I forgot the message software doesn't like the <> symbols Gary Kirkham A working Program is one that has only unobserved bugs I thought I wanted a career, turns out I just wanted paychecks

[TomKat]

#include #include char buf1[50]="",buf2[50]=""; DWORD x1=1923; float x2=0.5; sprintf(buf1,"%d",x1); sprintf(buf2,"%f",x2); x1=atol(buf1); x2=atof(buf2); quite simple ? right ! //be cool I am the mighty keeper of the book on knowledge . Contact me to get your copy .

[Brent Lamborn]

Just thought I would let you know since you helped me so much... I didn't even need to convert to strings. I add some code to my GetLabelVals function and changed the name of it to SetLabels(). I didn't realize it before but you can attach a double variable to the edit controls then, I just set the var attached to each box using the corresponding element in my double array. Then to have it appear on the screen -- I call UpdateData(false). I knew I could get the value in the box with an attached variable but I just figured out that I can set it using a variable also, using the UpdateData(false) call. So much work just for that!! ...Brent "It has become appallingly obvious that our technology has exceeded our humanity." - Albert Einstein (1879-1955) "I think there is a world market for maybe five computers." - Thomas Watson (1874-1956), Chairman of IBM, 1943 "640K ought to be enough for anybody." - Bill Gates (1955-), in 1981 "Half this game is ninety percent mental." - Yogi Berra