技術標籤：# C++

#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <inttypes.h>

int main()
{
    uint64_t num = 9223354444668731392;
    printf("%lu\n", num); //十進位制輸出
    printf("0x%"PRIx64"\n", num); //十六進位制輸出
 

    printf("0x%016lx\n", num); //十六進位制輸出: 0表示空餘的位用零填充，16表示顯示16位數字(格式化的字元數寬度)，I64表示64位int值（I32表示32位int值，i必須大寫）, x表示十六進位制形式顯示


    char *flags = "0x0000000000000000";
    uint64_t debug_flags = strtoull(flags, NULL, 0);
    printf("Debug flags set to '0x%" PRIX64 "'.\n", debug_flags)
 
;

    char *flags1 = "0x000000000001239";
    uint64_t debug_flags1 = strtoull(flags1, NULL, 0);
    printf("Debug flags set to '0x%" PRIX64 "'.\n", debug_flags1);
    printf("Debug flags set to '0x%016lx'.\n", debug_flags1);
}