2022年VF知识点总结 .pdf

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1、Visual Foxpro 程序设计基础一、重要知识点1.常量：a.数值型：占 8个字节b.货币型：占8 个字节，采用4 位小数，（四舍五入），如$123.456789将储存为$123.4568 c.字符型：（字符串）不包含任何字符的字符串是空串“”，空串与包含空格的字符串不同”（单双引号，方括号（定界符）都要是英文的）“？”换行，“？”不换行d.日期型：分隔符（/，.，空格）；默认斜杠，8 个字节必须有脱字符 命令格式：1SET MARK TO 2SET DATE TO AMERICAN(mm/dd/yy默认)YMD(yy/mm/dd)3SET CENTURY ON|OFF|TO ROLLV

2、ER（ON 显示世纪，4 位数表示年份，1992）（OFF 不显示世纪，2 位，92，默认）（TO 解释一个用 2 位数字年份表示的日期所处的世纪，年份小于参照值，世纪值加1）4SET STRICTDATE TO 0|1|2(0 不进行严格的日期格式检查；1 进行，默认；2 进行)例：SET CENTURY ON SET MARK TO SET DATE TO YMD?2011-2-11 显示：2011/2/11 e.日期时间型：,默认 AM，8 个字节f.逻辑型：.T.t.Y.y.真，.F.f.N.n.假；两个句点不可少，是定界符。2.变量a,创建数组DIMESION y(2,2)b.内存变

3、量赋值1STORE TO 2=c.内存变量的显示1LIST MEMORY LIKE 通配符；一屏显示2DISPLAY MEMORY LIKE 通配符；多屏显示通配符有*和？，*表示任意多个字符；？表示任意一个字符例：LIST MEMORY LIKE A*表示只显示变量名以A 开头的所有内存变量d.内存变量的清除1CLEAR MEMORY 清除所有2RELEASE 3RELEASE ALL EXTENDED用于程序中 清除所有4RELEASE ALL LIKE 通配符 EXCEPT 通配符 LIKE 清除与通配符匹配的内存变量EXCEPT 清除与通配符不匹配的e表与表组之间的数据传递将表的当前记

4、录复制到数组SCATTER TO 将数组数据复制到表的当前记录GATHER FROM 3表达式A.数值表达式 +*/%（求余）B字符表达式 +：首尾相接：两字符串相连，前一个字符的尾部空格移到新字符串尾部 Len()用于计算字符串的长度 c.日期时间表达式日期+天数（后多少天）；日期天数（前多少天）；日期日期（得相差的天数）；日期时间+秒数（多少秒后）日期时间秒数（多少秒前）日期时间日期时间（相差的秒数）d.关系表达式 =不等于（或#或!=）（字符串精确比较）$子串包含测试1.T.大于.F.$若字符 1 是字符 2 的一个子字符串，则结果为逻辑真，否则为逻辑假2设置字符排序次序命令：SET C

5、OLLATE TO“排序次序名”Machine:机内码，空格最前，大写ABCD,小写 abcd PinYin:拼音次序，空格最前，小写abcd,大写 ABCD Stroke:不论中西文，书写笔画3两字符串完全相同结果才为真 SET EXACT ON|OFF ON是尾部加上多个空格，使得两字符串的长度相等，OFF默认值，只要两者前面部分匹配就为逻辑真 e.逻辑表达式运算符：NOT AND OR 4.常用函数 A.数值函数1ABS（）绝对值 SIGN（）指定符号，运算结果分别为正、负和零时，输出 1、1、0 2SQRT 求平方根 PI（）圆周率3求整数 INT()取整数部分 INT(5.8)=5

6、CEILING()取大于等于它的最小整数CEILING(5.8)=6 FLOOR()取小于等于它的最大整数FLOOR(5.8)=5 4四舍五入函数 ROUND(数值表达式 1，数值表达式 2)表达式 2 为四舍五入的位置ROUND(345.345,2)=345.35 ROUND(345.345,0)=345 ROUND(345.345,-1)=350 5求余 MOD(被除数 ,除数)余数符号同除数符号，被除数与除数同号时，函数值为两数相除的余数；异号时，函数值为相除的余数加上除数的值MOD(1O,3)(10除 以3)1 MOD(10,-3)=1+(-3)=-2 MOD(-10,-3)=-1 M

7、OD(-10,3)=-1+3=2 6最大最小 MAX()MIN()B.字符函数1字符串长度 LEN（）大小写转换 LOWER()大到小 UPPER()小到大文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC

8、3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:C

9、C3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:

10、CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码

11、:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编

12、码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档

13、编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文

14、档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W32空格字符串生成 SPACE 3删除前后空格 TRIM()去后空格 LTRIM()去前空格 ALLTRIM()去前后空格4取子串 LEFT(表达式，长度)RIGHT(GOOD,2)6子串首字符位置 AT(字符表达式 1，字符表达式 2，第几次出现)ATC(同上)ATC不分大小写，AT分，默认第一次例：STORE“This is Visual Foxpro”TO x?AT(“fox”,x),ATC(“fox”,x),AT(“is”,x,3),AT(“xo”,x)0 16 10 0 7子串替换 STUFF（字符 1

15、，起始位置，长度，字符2）8字符替换 CHRTRAN(字符 1，字符 2，字符 3)9字符串匹配 LIKE(字符 1，字符 2)分大小写 C 日期和时间函数DATE（）函数值为日期型 TIME()字符型 DATETIME()日期时间型 YEAR()MONTH()DAY()HOUR()MINUTE()SEC()D.数据类型转换函数1数值转换成字符 STR(数值表达式，长度（默认 10），小数位数（0）)2字符串转换成数值 VAL(字符表达式)例：STORE-123.TO x STORE 45TO y STORE A45 TO z?VAL(x+y),Val(x+z),VAL(z+y)-123.45

16、 -123.00 0.00 3字符转换成日期 CTOD()或日期时间型 CTOT(W)4日期或日期时间转换成字符串DTOC()TTOC()5宏替换函数（字符型变量）&替换出字符变量得具体内容 E.测试函数1值域测试函数 BETWEEN 表达式 H 若值 L=T=H，则函数值为逻辑真，否则为逻辑假，L、H中有一个是 NULL值，则函数值也是 NULL值2空值 NULL 值测试函数 ISNULL表达式的运算结果是NULL值是，返回逻辑真，否则为逻辑假3“空”值测试函数 EMPTY EMPTY 结果是逻辑假4数据类型测试函数 VARTYPE 用 VARTYPE()测得的数据类型返回的字母数据类型返回

17、的字母数据类型C 字符型或备注型G 通用型N 数值型、整型、浮点或双精度型D 日期型Y 货币型T 日期时间型L 逻辑型X NULL值O 对象型U 未定义5表文件尾测试函数 EOF测试记录指针是否指向文件尾，是就返回逻辑真6表文件首 BOF 工作区号表别名文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文

18、档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3

19、文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W

20、3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9

21、W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H

22、9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1

23、H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R

24、1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W37记录号测试函数 RECNO()返回记录号表未打开，函数值为0；记录指针在尾，函数值为记录号+1；在首，函数值为第一条记录的记录号8记录个数测试函数 RECCOUNT 9条件测试函数 IIF逻辑表达式表达式 1 表达式 2若逻辑表达式的值为逻辑真，返回表达式1 的值，否则返回表达式2 的值。10记录删除测试函数 DELETE 测试当前表文件或指定表文件中的当前记录是否有删除标记“*”，有就返回逻辑真，否则返回逻辑假

25、5.程序与程序文件扩展名 .prg 命令格式：MODIFY COMMAND 终止程序：CANCAL 执行程序：DO 退出：QUIT 结束当前程序运行，返回上级:RETURN 基本命令：INPUT 输入 ACCEPT 暂停 WAIT 暂停基本结构：顺序结构选择结构 IF ELSE ENDIF 循环结构 DO WHILE ENDDO|FOR ENDFOR 过程定义的语法格式：PROCEDURE|FUNCTION 过程名命令序列 RETURN 表达式 ENDPROC|ENDFUNC 一般情况下，过程保存在称为过程文件的单独文件里。过程文件包含的过程数量不限。过程文件的建立仍使用MODIFY COMM

26、AND 扩展名仍为.PRG 打开过程文件 SET PROCEDURE TO 过程文件关闭过程文件 RELEASE PROCEDURE 过程文件接收参数的命令有PARAMETERS形参变量被看作是模块程序中建立的私有变量|LPARAMETERS形参变量局部调用模块程序的格式：1DO 文件名过程名 WITH 实参2文件名过程名（实参）形参数目不能少于实参的数目，若有多于的形参取初值逻辑值假如果实参实变量，可从新设置参数传递方式（按值传递，按引用传递），命令格式：SET UDFPARMS TO VALUE(值)|REFERENCE(引用)内存变量：全局变量（公共变量）PUBLIC 私有变量局部变量

27、LOCAL 二课后易错题 1A2001-05-01 10:10:10 AM-10 日期时间秒数 B.2001-05-01-DATE()日期日期 C.2001-05-01+DATE()错日期+日期 D.2001-05-01+1000 日期+天数 2.如果内存变量和字段变量均有变量名“姓名”，那么引用内存变量的正确办法：M.姓名或 M 姓名 3.一个汉字占两个字节 a=”你好”b=”大家”则”大家好”b+RIGHT(a,2)文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档

28、编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文

29、档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3

30、文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W

31、3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9

32、W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H

33、9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1

34、H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W34.将表的记录复制到数组中，可以使用SCATTER TO将数组中的记录复制到表中，可以用GATHER FROM5.在 VF中，用于建立或修改过程文件的命令是 MODIFY COMMAND 文件名6.如果一个过程不包含RETURN 语句，或者 RET

35、URN 语句中没有指定表达式，那么该过程 返回.T.7.要显示名字以 MY开头的所有内存变量，应当使用命令LIST MEMORY LIKE MY*8.?LEN(SPACE(3)-SPACE(2)=5 五个空格，不是 0 9.编辑程序文件 MODIFY COMMAND mypro 执行该程序文件的命令是 DO mypro(不要加.prg)10.按作用域分，将能够在建立它的模块及其下属各模块中使用的变量称为私有变量，将只能在建立它的模块中使用的变量称为局部变量，全局变量 应用于所有的模块11.打开过程文件 P1的命令是:SET PROCEDURE TO P1 文档编码:CC3A6F4P10Y6 H

36、N10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6

37、HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6

38、 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y

39、6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10

40、Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P1

41、0Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3文档编码:CC3A6F4P10Y6 HN10K5Y1V3P2 ZZ10X1R1H9W3