light.java

来自「180个针对Java初学者的简单实例180个针对Java初学者的简单实例180个」· Java 代码 · 共 17 行

class Light{
  public static void main(String args[]) {
    int lightspeed;
    long days;
    long seconds; 
    long distance;
    //距离=光速×时间(以秒为单位)
    lightspeed = 186000;
    days = 1000;                    // 给出天数
    seconds = days * 24 * 60 * 60;     // 转换成秒
    distance = lightspeed * seconds;    // 计算距离
    System.out.print("In " + days);
    System.out.print(" days light will travel about ");
    System.out.println(distance + " miles.");
  }
}