public class Test2 { public static void main(String[] args) { int sum=0,i,j; for(i=1;i<=10;i++) { if(i%2 == 0) { continue; } sum += i; } System.out.println("sum="+sum); for(j=2;j<=100;j++) { for(i=2;i<=j/2;i++) { if(j%i==0) { break; } } if(i>j/2){ System.out.println(j+"是素数"); } } }}