通过键盘输入某班级30名学生的数学成绩(0~100之间的整数)，每个数据按前后次序对应学生的学号，求每位同学的成绩、总成绩、平均成绩、最高成绩、最低成绩。-Through the keyboard input of a class of 30 students in math (an integer between 0 and 100), before and after each data sequence by the corresponding number of school students, each student seeking a total score, grade point average, the highest score, the lowest results.