列举所有质数

[java]代码库

import java.util.Scanner;
public class text {

	public static void main(String[] args) {
		System.out.print("你好！\n");
		Scanner input=new Scanner(System.in);
		int k=1,n=input.nextInt();
		for (int i = 1; i <= n; i++) {
			for (int j = 2; j < i; j++) {
				k=i%j;
				if (k==0) {
					break;
				}
			}
			if (k!=0) {
				System.out.printf("%d\n", i);
			}
		}
		input.close();
	}
}