实现简单的排序，如冒泡排序，选择排序等，并能计算排序时间-Simple sorting, and sorting time can be calculated

某石油公司的销售报表，计算销售额，净利等。使用COBOL编写。涉及表结构。排序。-An oil company sales reports, sales profit calculation, etc..The use of COBOL prepared.Involving the table structure.sort。

程序能对学生信息进行输入、查询、计算总分和平均分、按学号进行排序等操作。-Procedures for students to input information,query,calculate total score and average score、according to its study ranking the operation.