Java语言程序设计基础篇编程练习题1.11示例代码

public class Test1_11 {
	public static void main(String[] args) {
		int num = 312032486;
		for(int i = 1; i <= 5; i++) {
			num = fun(i, num);
			System.out.println("第" + i + "年的人口数是： " + num);
		}
	}
	public static int fun(int i, int num) {
		int time = 3600 * 24 * 365 * i;
		double birth = time / 7.0;
		double die = time / 13.0;
		double in = time / 45.0;
		int change = (int) (birth + in - die);
		num += change;
		return num;
	}
}

以上代码均为个人编写，不当之处，悉请指正。