在Visual FoxPro教学中值得注意的几个问题

Some Attentive Problems in Visual FoxPro Teaching

从格式和语法入手,以具体的实例分析和讨论了在Visual FoxPro程序设计语言教学和实习中学生容易出错的问题,如字符比较、str()函数调用、NULL值以及宏代换函数(&)等问题,并给出了解决方法.

For some problems of Visual FoxPro which are easy wrong by students, does the analysis and discussion from format and syntax, and gives the definite solutions, includes the comparison of character size, calling function str（）, NULL value, Macro（＆） and so on.