C / C++ / MFC

int Number = 57;        // For example
char szString[255];
strcpy(szString,"");

while (true)
{
      if (Number>=27)
      {
          strcat(szString,"a");
          Number -= 26;
      }
      else
      {
          char Temp;
          Temp = Number + 97;    // 97 is the ASCII code for 'a'
          int StrLen = strlen(szString);
          szString[StrLen] = Temp;
          szString[StrLen+1] = '\0';
          break;      //end while loop
      }
}

<br />
	CString	str;<br />
	int number = 53;<br />
<br />
	do<br />
	{<br />
		number--;<br />
		str.Insert(0, 'a' + (number % 26));<br />
		number /= 26;<br />
	}<br />
	while (number > 0);<br />
<br />
	TRACE(_T("str: %s"), str);<br />

<font color=blue>int</font> iVal = 453; <font color=green>// For example</font>
<font color=blue>char</font> Result[5] = <font color=gray>""</font>;
 
<font color=blue>if</font> (iVal >= 17577) {  <font color=green>// For the most left character</font>
    Result[0] = (iVal % 26) - 1 + <font color=gray>'A'</font>;
}
<font color=blue>else</font> {
    Result[0] = <font color=gray>'\0'</font>;
}
 
<font color=blue>if</font> (iVal >= 677) {  <font color=green>// For the second left character</font>
    Result[1] = (iVal % 26) - 1 + <font color=gray>'A'</font>;
}
<font color=blue>else</font> {
    Result[1] = <font color=gray>'\0'</font>;
}
 
<font color=blue>if</font> (iVal >= 27) {  <font color=green>// For the third left character</font>
    Result[2] = (iVal % 26) - 1 + <font color=gray>'A'</font>;
}
<font color=blue>else</font> {
    Result[2] = <font color=gray>'\0'</font>;
}

<font color=blue>if</font> (iVal >= 1) {  <font color=green>// For the most right character</font>
    Result[3] = (iVal % 26) - 1 + <font color=gray>'A'</font>;
}
<font color=blue>else</font> {
    Result[3] = <font color=gray>'\0'</font>;
}
 
Result[4] = <font color=gray>'\0'</font>;
 
<font color=green>// Re-order the string (erases the '\0' at the beginning of the string)...</font>
<font color=blue>for</font> (int</font> i = 0, i < 4, i++) {
    <font color=blue>if</font> (Result[1] == <font color=gray>'\0'</font>) {
        Result[i] = Result[i+1];
    }
}

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown