Im currently working within MFC and i was wondering how u convert an Integer to a String for use in a TreeView. Any help will do thanks!!

HEre is my algo for displaying integers in Win32. I am not sure what you were asking for exactly.




const int ARRAY_LENGTH = 64;
char array[ARRAY_LENGTH]; // Array to hold final string to represent the number
const int k = 10; // If you devide a number by 10, you can get the number in the end digit
int j = 10; // Used to drop the end digit

memset((void*)array, '' '', sizeof(array));

for(int i = (ARRAY_LENGTH - 2); i >= 0; i--)
{
switch(number % k)
{
case 0:
array = ''0'';
break;
case 1:
array = ''1'';<br> break;<br> case 2:<br> array = ''2'';<br> break;<br> case 3:<br> array = ''3'';<br> break;<br> case 4:<br> array = ''4'';<br> break;<br> case 5:<br> array = ''5'';<br> break;<br> case 6:<br> array = ''6'';<br> break;<br> case 7:<br> array = ''7'';<br> break;<br> case 8:<br> array = ''8'';<br> break;<br> case 9:<br> array = ''9'';<br> break;<br> default:<br> return ARROW_FAILURE;<br> }<br><br> number /= j;<br><br> if(number <= 0)<br> break;<br> }<br><br> array[ARRAY_LENGTH - 1] = ''\0'';<br> <br> for(int m = 0, n = 0; m < ARRAY_LENGTH; m++)<br> if(array[m] != '' '')<br> {<br> array[n] = array[m];<br> n++;<br> }<br><br><br> ::DrawText(m_hDC, array, -1, lpRect, uFormat);<br><br></code><br><br><br> </i> <br><br> Brent Robinson<br>"Stupidity is a virtue"-me

sprintf(text_string,"%i",integer);

Edit:
After a quick reminder that MFC uses CString (i dont use mfc, dont like it at all heh) I did a little checkup. For CString, use:

str.FormatV("%i",integer);

where str is a CString.


Edited by - Maximus on March 13, 2001 1:16:37 AM

quote:

---

Brent Robinson

"Stupidity is a virtue"-me

---

you don't say =) =) =) nah just kidding but it looks so funny to see such a long function, and then seeing Maximus' one line answer on the next post.

But it is good to be able to write functions like that. Builds the mind. Heightens the skills. Etc. Etc.

Edited by - wise_guy on March 12, 2001 12:37:20 AM

quote:

---

Original post by Coconut

HEre is my algo for displaying integers in Win32. I am not sure what you were asking for exactly.

---

You know, instead of that huge case statement, you can use:

temp = number % 10;if (temp >= 0 || temp <= 9){    array = temp + ''0'';    number /= 10;}else{    return ARROW_FAILURE} 

logically, if you add the character ''0'' to the number 0, you get the character ''0''.

''0'' + 1 = ''1'', etc.

===============================================
Hurry up madness, hurry up disease,
hurry up insanity, hurry up please.
Hooray! I say, for the end of the world.

use the functions

itoa() integer to string
atoi() string to integer

i.e. the number 123456789 would become "123456789" and
vice versa

-Vulcan

The atof instruction is good. I use this myself.

Indy

What I''ve never got about atof() is why isn''t the inverse function called ''ftoa'', but fcvt, ecvt & gcvt...

I wrote an ftoa function of my own, though it requires an external data stack (the 16 bit ASM version doesnt though, it uses the system stack.)


anyhow, it takes a float and converts it into normalized scientific notation:


(sign) | (first digit) | . | (15 digits) | e | (exponent sign) | (3 digit exponent)


ie:

-4.1234e-010
4.1234e010
1.234e-100


etc.
normalized requires that the first digit is non-zero, and that there is only one digit in front of the decimal point.

I''ll post the general algorithm later if i have time.


===============================================
Hurry up madness, hurry up disease,
hurry up insanity, hurry up please.
Hooray! I say, for the end of the world.

Oh yeah, it cuts off digits if they round to zero, instead of printing 15 zero''s.


instead of:
1.234500000000000e002

it would print:
1.2345e002


i suppose i should modify the routine to print an alterable number of digits... heh.

===============================================
Hurry up madness, hurry up disease,
hurry up insanity, hurry up please.
Hooray! I say, for the end of the world.