dowhile循环 学习

public class DoWileDemo01 {
    public static void main(String[] args) {
        int i = 0;
        int sum = 0;

        do {
            sum = sum + i;
            i++;

        }while (i<= 100);

        System.out.println( sum);
    }
}

public class DoWileDemo02 {
    public static void main(String[] args) {
        int a = 0;

        while(a<0){
            System.out.println(a);
            a++;
        }


        System.out.println("===============");
        do {
            System.out.println(a);
            a++;
            System.out.println(a);


        }while (a<0);


    }
}