题解 | #整数与IP地址间的转换#

// HJ33 整数与IP地址之间的转换.cpp : 此文件包含 "main" 函数。程序执行将在此处开始并结束。
#define _CRT_SECURE_NO_WARNINGS
#include<iostream>
#include<bits/stdc++.h>

using namespace std;

typedef long long ll;

int main()
{
	ll a, b, c, d,num;
	/*while ((scanf("%lld.%lld.%lld.%lld", &a, &b, &c, &d)) != EOF)
	{
		cin >> num;
		cout << ((a << 24) + (b << 16) + (c << 8) + d) << endl;
		a = num >> 24;
		num = num - (a << 24);
		b = num >> 16;
		num = num - (b << 16);
		c = num >> 8;
		num = num - (c << 8);
		d = num;
		cout << a << "." << b << "." << c << "." << d << endl;
	}*/
	scanf("%lld.%lld.%lld.%lld", &a, &b, &c, &d);
	cin >> num;
	cout << (a << 24) + (b << 16) + (c << 8) + d << endl;
	a = num >> 24;
	num = num - (a << 24);
	b = num >> 16;
	num = num - (b << 16);
	c = num >> 8;
	num = num - (c << 8);
	d = num;
	cout << a << '.' << b << "." << c << "." << d << endl;
	return 0;
}