这是学生成绩查询系统的一小部分，能实现（1）函数input() 输入20个学生姓名和高考总分；

（2）函数sort() 按高考总分从高到低的顺序排序，姓名顺序也随之调整；

（3）函数display()显示学生姓名及其高考总分；

（4）在主函数中输入一个姓名，编写函数search() 用顺序查找方法找出该学生。若查找成功，在主函数中显示该生姓名及其高考总分；否则显示查找失败。

-This search system is student achievement a small part, to achieve (1) function input () input 20 names of students and college entrance examination score　(2) function sort () by college entrance examination score sorted in descending order, name order also will be adjusted　(3) function display () displays the names of students and their college entrance examination score　(4) in the main function, enter a name, write the function search () method with a sequential search to find the student. If the lookup succeeds, the main function to display the student name and college entrance examination score　otherwise display the lookup fails.