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

void changeBuff(unsigned char ** b)
{
	(*b)[0] = 0x12;
	(*b)[1] = 0x34;
}

int main(void) {
	unsigned char * buf = (unsigned char *)malloc(sizeof(unsigned char) * 2);
	buf[0] = 0x55;
	buf[1] = 0xAA;
	printf("%x\t%x\n", buf[0], buf[1]);
	changeBuff(&buf);
	printf("%x\t%x\n", buf[0], buf[1]);
	return 0;
}