C语言利用联合和结构体将IP地址进行打印及换行

#include<stdio.h>
union Ip
{
    unsigned int num;
    struct
    {
        unsigned char c1;
        unsigned char c2;
        unsigned char c3;
        unsigned char c4;
    }ip;
};
int main()
{
    union Ip my_ip;
    my_ip.num = 678273849;
    printf("%d.%d.%d.%d", my_ip.ip.c1, my_ip.ip.c2, my_ip.ip.c3, my_ip.ip.c4);
        return 0;
}

#include<stdio.h>
union Ip
{
    unsigned int num;
    struct
    {
        unsigned char c1;
        unsigned char c2;
        unsigned char c3;
        unsigned char c4;
    }ip;
};
int main()
{
    union Ip my_ip;
    my_ip.num = 678273849;
    printf("%d.%d.%d.%d\n", my_ip.ip.c1, my_ip.ip.c2, my_ip.ip.c3, my_ip.ip.c4);
        return 0;
}