闰年问题 涉及bool类型和简单的cin cout熟悉

#include
using namespace std;
int main() {
	int year;
	bool leapyear; 
	cout << "Enter the year:";
	cin >> year; 
	leapyear = ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0);
	
	if (leapyear) 
		cout << year << "is a leap year" << endl;
	
	else
		cout << year << " is not a leap year" << endl;
	return 0;
}