/*
* Take a string (char *s), which has previously been verified to contain only
* binary characters (1 or 0), and convert it to a decimal number
*/
double binary_to_decimal( char *s )
{
/* Our initial variables */
unsigned int placement = 0;
double total = 0;
/* We're starting on the 'right side' of the binary string */
int i = 0;
// If we're doing the big-endian thing (default)
if( bigEndian == 1 )
{
for( i = strlen(s); i >= 0; --i )
{
/* If we hit a newline or a null char, just ignore it */
if( s[i] == '\n' || s[i] == '\0' )
continue;
if( s[i] == '0' ) { ++placement; }
else if( s[i] == '1' )
{
total += power_of( 2.0f, placement );
++placement;
}
} // for i, etc.
} // if bigEndian
// Otherwise, do the weird, little-endian stuff
else
{
for( i = 0; i < strlen( s ); ++i )
{
/* If we hit a newline or a null char, just ignore it */
if( s[i] == '\n' || s[i] == '\0' ) continue;
if( s[i] == '0' ) { ++placement; }
else if( s[i] == '1' )
{
total += power_of( 2.0f, placement );
++placement;
}
} // for i, etc.
}
/* Return our total */
return( total );
}
int main(void){
int number;
int length;
int first;
int power;
int body;
int i;
int length_copy;
char num;
number = 98;
length_copy = number_length(number);
/*do this for the lenght of the number*/
for(i = 0 ; i < length_copy; i++)
{
length = number_length(number);
first = first_digit(number, length);
/*converting an integer to a char*/
num = first +48;
write(1, &num, 1);
power = power_of(length);
body = num_body(number, power, first);
number = body;
}
return 0;
}
