#include<stdio.h>

typedef unsigned char *byte_pointer;

void show_bytes(byte_pointer start, int len)
{
    for(int i = 0; i < len; i++)
        printf(" %.2x", start[i]);

    printf("\n");
} //show_bytes

int main(void)
{
    short sx = -12345;
    unsigned short uy = sx;

    printf("uy = %u :\t", uy);
    show_bytes((byte_pointer) &uy, sizeof(unsigned short));

    return 0;
}