不受限读取excel文件数据，可以进行任意字段的excel文件数据读取-Read excel file data is not restricted, any field can be read excel file data

vc++编写的一个很有用的小程序，主要针对office的编程，这个例子是对excel进行读写-vc++ prepared a very useful little program, the main office for the programming, this example is to read and write excel