#include <stdio.h>

void DumpHex(const char *p, int size)
{
    int left = size;
    while(left > 0)
    {
        int i;
        for(i = 0; i < 16; i++)
        {
            printf("%2.2X ", *p++);
            left--;
            if(left <= 0)
                break;
        }
        printf("\n");
    }
}

int main()
{
    char testdat[] = "\x42\x23\x09\x00\x63\x12\x22";
    char testdat2[] = "Something longer than 16 bytes to see wrapping. Blah Blah Blah";

    printf("testdat:\n");
    DumpHex(testdat, sizeof(testdat)-1);
    printf("testdat2:\n");
    DumpHex(testdat2, sizeof(testdat2)-1);

    return 0;
}