Method main

day22/code/day22_IO/src/cn/itcast_07/PrintfDemo.java:7–23

(String[] args)

 */
public class PrintfDemo {
	public static void main(String[] args) {
		// �̶��ı�
		// System.out.printf("hellworld\n");
		// System.out.printf("hellworld\n");

		// ��ָʾ���ı�
		// System.out.printf("%d\n", 100, 200);
		// System.out.printf("%d<%d\n", 100, 200);
		// System.out.printf("%d<%d\n", 100);

		// System.out.printf("%d+%d=%d\n", 10, 20, 30);
		// System.out.println(10 + "+" + 20 + "=" + 30);

		System.out.printf("%.1f\n", 12.345);
		System.out.printf("%.2f\n", 12.567);
		System.out.printf("%.2f\n", 12.564);
	}
}