Uninitialised memory test

#include <stdio.h>

#define LEN 0xfff
#define DTYPE unsigned int
#define PRI_DTYPE "x"

int main()
{
    int i;
    DTYPE buf[LEN], result = 0;

    for (i = 0; i < LEN; i++)
    {
        result ^= buf[i];
    }

    printf("Result = 0x%"PRI_DTYPE"; length of buffer = %d byte(s) * %d\n", result, sizeof(DTYPE), LEN);

    return 0;
}