jash.liao的JAVA整理教學:JAVA控制結構-迴圈(while) – jashliao部落格

publicclass HelloWorld{

     publicstaticvoid main(String[]args){

        int sum =0;

        int i =1;

        while(i <=100){

            sum += i++;

        }

        System.out.println("1 + 2 + .... + 99 + 100 = "+ sum);

     }

}