#include <stdint.h> #include <stdlib.h> #include <stdio.h> #include <math.h> struct Integer{ uint64_t length; uint64_t *data; }; void integer_print(Integer a) { for(uint64_t i = 0; i < a.length; ++i) { uint64_t pos = a.length - 1 - i; printf("%.16llX", a.data[pos]); } printf("\n"); } int main() { Integer a = {3, (uint64_t *)calloc(3, 8)}; a.data[0] = 0xF333F333F333F333; a.data[1] = 0xD222D222D222D222; a.data[2] = 0xA111A111A111A111; integer_print(a); return 0; }