设有九个学生某门课的成绩存放在数据区中。试编制一个程序，统计低于60分，60～69分，70～79分，80～89分，90～99分和100分的人数，并输出显示统计结果。-With nine students in a course results are stored in the data area. Try to prepare a program, statistics, less than 60 points, 60 to 69, 70 to 79, 80 to 89, 90 to 99 p