输入每位学生的信息并显示这些信息；同时计算每位学生的总分即英语、语文、数学成绩之和，并对输入的若干学生按总分排名，按总分名次输出每位学生及其信息；最后计算这些学生的英语平均分、语文平均分和数学平均分，并输出结果。-Enter the information for each student and display the information　also calculated the total score for each student that is in English, language, mathematics, and of, and input a number of students ranked by total score, according to students and their overall ranking for each output information　finally calculating the average score of students in English language and mathematics average score average score, and output.