utoa()

Convert an unsigned binary integer to a string

Synopsis:

#include <stdlib.h>

char* utoa( unsigned int value,
            char* buffer,
            int radix );

Library:

libc

Description:

The utoa() function converts the unsigned binary integer value into the equivalent string in base radix notation, storing the result in the character array pointed to by buffer. A null character is appended to the result. The size of buffer must be at least (8 * sizeof(int) + 1) bytes when converting values in base 2. That makes the size 17 bytes on 16-bit machines, and 33 bytes on 32-bit machines.

Returns:

A pointer to the result.

Examples:

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

int main( void )
  {
    int base;
    char buffer[18];

    for( base = 2; base <= 16; base = base + 2 )
      printf( "%2d %s\n", base,
          utoa( (unsigned) 12765, buffer, base ) );
    return EXIT_SUCCESS;
  }

produces the output:

 2 11000111011101
 4 3013131
 6 135033
 8 30735
10 12765
12 7479
14 491b
16 31dd

Classification:

QNX 4

See also:

atoi(), atol(), itoa(), ltoa(), sscanf(), strtol(), strtoul(), ultoa()