要求设计一个表示学生的类，里面有学生的三项成绩：计算机成绩，数学成绩，英语成绩。要求可以求总分，平均分，最高分，最低分，并且可以输出一个学生的完整信息-To design a class of students, which students of the three results: the computer results, mathematics achievement, English achievement. Requirements can seek total score, average score, highest score, lowest score, and can output a student complete information