#include <stdio.h>
#include <stdint.h>
int main(void){
    const char* L[] = {"b","cd","def","efgh","fghij","ghijkl","hijklmn","ijklmnop","jklmnopqr","klmnopqrst","lmnopqrstuv","mnopqrstuvwx","nopqrstuvwxyz","opqrstuvwxyzab","pqrstuvwxyzabcd","qrstuvwxyzabcdef","rstuvwxyzabcdefgh","stuvwxyzabcdefghij","tuvwxyzabcdefghijkl","uvwxyzabcdefghijklmn"};
    int n = 20, mis = 0;
    for (int i=0;i<n;i++){
        uintptr_t p = (uintptr_t)L[i];
        int a8 = ((p & 0x7) == 0);
        if (!a8) mis++;
        printf("len=%02d %-22s %p   aligned8=%d\n", (int)i+1, L[i], (void*)p, a8);
    }
    printf("%d of %d misaligned  (%.0f%%)\n", mis, n, 100.0*mis/n);
    return 0;
}