PIPIOJ 1001 水仙花数

纠结的点：多行输入

#include<iostream>
#include<cmath>
using namespace std;

int main()
{
	int n, m;
	while (cin >> m >> n)
	{
	    int	count=0;
		for (int num = m; num <= n; num++)
		{

			if ((pow((num / 100), 3) + pow((num / 10)%10, 3) + pow(num %10, 3) == num)&&(count==0))
			{
				cout << num;
				count++;
			}
			else if ((pow((num / 100), 3) + pow((num / 10) % 10, 3) + pow(num % 10, 3) == num) && (count != 0))
			{
				cout << " "<< num;
				count++;
			}
		}
		if (count == 0)
		{
			cout << "no";
		}
		cout << endl;
	}
	return 0;
}

优化后：

#include<iostream>
#include<cmath>
using namespace std;

int main()
{
	int n, m;
	while (cin >> m >> n)
	{
	    int	count=0;
		for (int num = m; num <= n; num++)
		{
			int sum = pow((num / 100), 3) + pow((num / 10) % 10, 3) + pow(num % 10, 3);
			if (sum == num)
			{
				if (count == 0)
				{
					cout << num;
					count++;
				}
				else
				{
					cout << " " << num;
					count++;
				}
			}
		}
		if (count == 0)
		{
			cout << "no";
		}
		cout << endl;
	}
	return 0;
}

另：为什么代码有system("pause") 就不算正确答案