#include <stdio.h>

unsigned char inbuf[]="Now is the time for all ";
unsigned char outbuf[50];

void hexdump(unsigned char *p, int n) {
	for (int i=0; i<n; i++) {
		printf("%02x ", *p++);
	}
	puts("\n");
}

int main(int, char **) {
	unsigned char *src = inbuf;
	unsigned char *srcEnd = src + sizeof(inbuf);
	unsigned char *dst = outbuf;
	hexdump(src, sizeof(inbuf));
	int bits = 0;
	int buf = 0;
	while (src != srcEnd) {
		buf |= (*src++)<<bits;
		bits += 8;
		while (bits > 6) {
			*dst++ = buf & 0x3f;
			buf >>= 6;
			bits -= 6;
		}
	}

	hexdump(outbuf, dst-outbuf);
}