light.java

JAVA编程思想源代码 值得一下 很难找的

package chapter3;

public class Light {
	public static void main(String args[]) {
		int lightspeed = 186000000; // 光速的近似值，单位公里/秒
		long days;
		long seconds;
		long distance;

		days = 1000; // 指定天数
		seconds = days * 24 * 60 * 60; // 转换为秒
		distance = lightspeed * seconds; // 计算距离

		System.out.print("In " + days + " days light travels about " + distance
				+ " miles.");

	}
}