Converting chars to binary - Version 2


This is another version of a char variable to binary program.

#include <stdio.h>
#include <string.h>

/*
 * When translating from char to binary we are using this map:
 *
 * Dec.	   Bin.			Hex.
 *   1 <=> 00000001 <=> 0x01 => 1*2^0
 *   2 <=> 00000010 <=> 0x02 => 1*2^1
 *   4 <=> 00000100 <=> 0x04 => 1*2^2
 *   8 <=> 00001000 <=> 0x08 => 1*2^3
 *  16 <=> 00010000 <=> 0x10 => 1*2^4
 *  32 <=> 00100000 <=> 0x20 => 1*2^5
 *  64 <=> 01000000 <=> 0x40 => 1*2^6
 * 128 <=> 10000000 <=> 0x80 => 1*2^7
 */

void
char_to_bin_v2(char c)
{
	int i, bin[8];
	char ch = c;

	bin[0] = (ch & 0x01) ? 1 : 0;
	bin[1] = (ch & 0x02) ? 1 : 0;
	bin[2] = (ch & 0x04) ? 1 : 0;
	bin[3] = (ch & 0x08) ? 1 : 0;
	bin[4] = (ch & 0x10) ? 1 : 0;
	bin[5] = (ch & 0x20) ? 1 : 0;
	bin[6] = (ch & 0x40) ? 1 : 0;
	bin[7] = (ch & 0x80) ? 1 : 0;

	for(i = 0; i < 8; i++)
		printf(%d; bin[i]);
}

int
main(int argc, char *argv[])
{
	char msg[1024] = "Hello, world!";
	char letter;
	int i, n = 0;

	printf("Char to binary - Version 2:\n");

	for (i = 0; i < strlen(msg); i++) {
		letter = msg[i];
		char_to_bin_v2(letter);
		printf(" ");
		n++;
		/* A maximum number of 14 character's per line */
		if (n == 14) {
			printf("\n");
			n = 0;
		}
	}

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