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Full Discussion: decimal to binary function error
Top Forums Programming decimal to binary function error Post 302152678 by return_user on Thursday 20th of December 2007 09:09:24 PM
Old 12-20-2007
decimal to binary function error
I have the following simple code to return a binary number in a array format given an interger and the number of the bits for specifying the interger as binary number.

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

int main ()

{
// int* get_binary_number(int* bit_array, int num, int bit_count);
int* bitcount ( int n, int bit_count) ;
int* bit_array;
int i;

// bit_array = get_binary_number(bit_array, 23, 6);
bit_array = bitcount(23, 6);
printf("\nUsage: \n");
printf("\n the number '23' in binary is ");

for (i=0; i<6; i++)
{
printf("%d", bit_array[i]);
}


return 0;
}

int* bitcount ( int n, int bit_count)
{
int count[bit_count];
int bit_place = bit_count - 1;
while (n)
{
count[bit_place] = n && 1 ;
n >>= 1 ;
bit_place--;
}
return count ;
}

this program does compile with a warning

gcc -c -Wall -c -o test.o test.c
test.c: In function ‘bitcount':
test.c:36: warning: function returns address of local variable
gcc test.o -o test


But when I try to run it, there is no result.
Any help to fix this is greatly appreciated.

Thank you,
 

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LEARN ABOUT HPUX

encodebinary32

_encodebinary64(3M)													       _encodebinary64(3M)

NAME

       _encodebinary64(), _encodebinary128(), _encodebinary32() - encode binary-encoded decimal data

SYNOPSIS

DESCRIPTION

       There  are  two	standard  bit-encodings  for decimal floating-point data: binary and decimal.  Both encoding provide exactly the same data
       (analogous to big endian and little endian encodings).  The HP-UX decimal floating-point types use the binary encoding.

       The function encodes x as a binary-encoded 64-bit decimal datum.

       is a version of it takes a argument and returns a result.

       is a version of it takes a argument and returns a result.

       These math functions are supported for HP-UX 11i Version 3 September 2008 Update and forward.

USAGE

       To use any of these functions, compile with the option.

       Make sure your program defines and then includes

       Link in the math library by specifying or on the linking command line.

       For more information, see the at the following site:

RETURN VALUE

       returns x in the binary encoding.

       raises no exceptions.

ERRORS

       No errors are defined.

SEE ALSO

       _decodebinary64(3M), _decodedecimal64(3M), _encodedecimal64(3M), math(5).

STANDARDS CONFORMANCE

       These functions are not specified in any standard.

							     HP Integrity Server Only					       _encodebinary64(3M)
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