### _ultoa -- Convert Unsigned Long Integer to String

Format

>     #include <stdlib.h>
>     char *_ultoa(unsigned long value, char *string, int radix);

Language Level: Extension
_ultoa converts the digits of the given unsigned long value to a null-terminated character string and stores the result in string. The radix argument specifies the base of value; it must be in the range of 2 through 36.

The space allocated for string must be large enough to hold the returned string. The function can return up to 33 bytes, including the null character (\0).

Return Value
_ultoa returns a pointer to string. There is no error return value.

Example
This example converts the digits of the value 255 to decimal, binary, and hexadecimal representations.

    #include <stdio.h>
    #include <stdlib.h>

    int main(void)
    {
       char buffer[10];
       char *p;

       p = _ultoa(255UL, buffer, 10);
       printf("The result of _ultoa(255) with radix of 10 is %s\n", p);
       p = _ultoa(255UL, buffer, 2);
       printf("The result of _ultoa(255) with radix of 2 is %s\n", p);
       p = _ultoa(255UL, buffer, 16);
       printf("The result of _ultoa(255) with radix of 16 is %s\n", p);
       return 0;

       /****************************************************************
          The output should be:

          The result of _ultoa(255) with radix of 10 is 255
          The result of _ultoa(255) with radix of 2 is 11111111
          The result of _ultoa(255) with radix of 16 is ff
       ****************************************************************/
    }

_ecvt -- Convert Floating-Point to Character
_fcvt -- Convert Floating-Point to String
_gcvt -- Convert Floating-Point to String
_itoa -- Convert Integer to String
_ltoa -- Convert Long Integer to String
_ulltoa -- Convert Unsigned Long Long Integer to String
<stdlib.h>