本程序采用两重循环来实现。内层对应学生的名词计算，外层对应所有学生的名次；以GRAED为首地址的10个字来保存学生的成绩，RANK为地址的10个字填入学生的而名次-This procedure uses the double loop to achieve. Inner layer corresponds to the term student computing, the outer layer corresponds to the ranking of all students　to GRAED headed by the address words to save the 10 student achievement, RANK for the address of the 10 words fill in the ranking of students