Create bai17.cpp

Author: coder-newbie404

b01/bai17.cpp

@@ -0,0 +1,10 @@
+#include <iostream>
+using namespace std;
+int main()
+{
+    int year;
+    cin >> year;
+    if ( (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0) ) cout << "Day la nam nhuan.";
+    else cout << "Day khong phai la nam nhuan.";
+    return 0;
+}