试编程判断输入的正整数是否既是5又是7的整倍数，若是，则输出yes，否则输出no。

#include<iostream>
using namespace std;
int main()
{
	int num = 0;
	cout << "please input num" << endl;
	cin >> num;
	if (num % 5 == 0 && num % 7 == 0)
		cout << "yes" << endl;
	else
		cout << "no" << endl;
	return 0;
}