对公司四位员工销售情况的统计记录，有四位员工编号1-4，每位员工销售相同的五种产品编号1-5，程序来实现对于每个月中，每个人每种商品的销售总额计算，每种商品月销售总额计算，每个员工所有商品销售总额的计算。读取数据是通过在程序中用canf（）来实现的，共需要读取600个数据，每位员工的数据是150个。-Four employees of the company' s statistical records of sales, there are four staff numbers 1-4, and each employee the same five products sales numbers 1-5, and procedures to achieve for each month, each person in each of the sales of goods in terms of gross sales on all kinds of commodities in terms of gross sales for each employee the total amount of all calculations. Read data through the procedures used in canf () to achieve a total of 600 needs to read data, and each employee' s data is 150.