vfp操作问题CLEARSET TALK OFF WAIT '请按任意键...' TO c windows AT 10,

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vfp操作问题
CLEAR
SET TALK OFF
WAIT '请按任意键...' TO c windows AT 10,15
IF c > = '0'.and.c < = '9'
str = c + "是数字符号"
ELSE
IF UPPER(c) > = 'a' .and.UPPER(c) < ='z'
str = c + "是英文字母"
ELSE
str = c + "是其他字母!"
ENDif
ENDIF
MESSAGEBOX(str,64,"输出")
SET TALK ON
RETURN
在运行的时候会出现“缺少操作符” 要运行下去要怎么弄?

哈,简单
原句：
IF c > = '0'.and.c < = '9'
改为：
IF c>='0'.and.c_= '0'.and.c_

vfp程序解答,set talk off,s=0,for i=1 to 10,i=i+1,s=s+i,endfor,?s vfp执行如下程序后,显示A的值 set talk off clear store 0 to a,b do while VFP：set talk off clear s=0 for m=3 to 7 n=2 do while n vfp中set talk off/on和set safety please wait while windows prepares to start... I kept him __ for about an hour.A.on waiting B to wait C off vfp中的wait()作用一、程序填空1．输入一串数字字符,当其个数为10时,进行各个数字求和运算,否则重新输入.CLEARSET TALK 开机显示please wait windows prepares to star vfp set exact off vfp编码wait window at 后面的数字是根据什么写的非常感谢 I often talk( )Tom( )The internet.A.to,on B.to,at C.to,in