编程建立学生成绩管理系统。要求具有以下功能：一个学生的信息包括学号、姓名、英语成绩、语文成绩、数学成绩，要求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。-Programming establishment of student achievement management system. Required to have the following features: a student information including student number, name, English, language scores, math scores, each student asked to enter information and display this information　also calculated that the total score for each student in English, language, mathematics achievements of, and input ranked according to total number of students, according to their overall ranking output information for each student　final calculation of these students'　English average, language and math average average, and outputs the result.