//http://www.timestocome.com
//fall 99
//Linda Cobb

//decimal to binary conversion program


#include <stdio.h>
#include <math.h>


int main (void){

	float	baseTenNumber;
	int	i;
	int	binary[24];
	double	base, exponent, temp, temp2;
	
	
	for(i=0; i<24; i++){
		binary[i] = 0;
	}

	printf("\n Enter a decimal ( base 10 ) number to convert to binary:> ");
	scanf( "%f", &baseTenNumber);


	temp = baseTenNumber;
	
	for(i=23; i>=0; i--){
	    
		temp2 = (pow(2,i));	//2^i
	    
		if(temp >= temp2){	//if decimal >= 2^i
	    
			binary[i] = 1;  //one in place i
			temp -= temp2;  //deduct from decimal number
		}
	}

	printf ("\n\n the binary format is...\n");
	for(i=23; i>=0; i--){
		if( i==3 || i==7 || i==11 || i==15 || i==19 ){ printf(" ");} //group binary number into 4 digit groups
		printf( "%d", binary[i]);
	}

	printf ( "\n");
	
	return 0;
}