计算100以内的所有偶数和

/**
 * Created by liwenj on 2017/7/17.
 */
public class test12 {
    public static void main(String[] args) {
        int i = 0;
        int sum = 0;
        while (i < 100) {
            sum = sum + i;
            i = i + 2;

        }
        System.out.println(sum);
    }
}