java基础学习：for循环，for循环案例

package com.itheima.loop;

public class For2 {
    public static void main(String[] args) {
        for (int i = 0; i <=100 ; i++) {
            System.out.println(i);
        }
        int a=0;
        for (int i = 0; i <=100 ; i++) {
            a=a+i;//a +=i
        }
        System.out.println(a);


        
        System.out.println("---------------------------------------");



        int b=0;
        for (int i = 0; i <=100 ; i+=2) {
            b=b+i;//a +=i
        }//计算出1-100之间的奇数合
        System.out.println(b);

    }
}