vb split 用法For i = 1 To AllNum1(LineNum1) NumberNum1(LineNum1,i) = Split(Split(s,,)(i),,)(0)Next i 尤其是Split(Split(s,,)(i),,)(0)怎么理解?特别是Split(Split(s,,)(i),,)后面的那个（0）什么意思啊?split函数后面加个（0）怎么理解,我把代码发全一点,代码没问题,测试过了Open PathIn1 For Input As #1Do Until EOF(1) = TrueLine Input #1,ss = , & s & ,LineNum1 = LineNum1 + 1Nnum = 0For i = 1 To Len(s) If Mid(s,i,1) = , Then Nnum = Nnum + 1Next iAllNum1(LineNum1) = Nnum - 1For i = 1 To AllNum1(LineNum1) NumberNum1(LineNum1,i) = Split(Split(s,,)(i),,)(0)Next iLoopClose #1
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【答案】 Split(Split(s, ,)(i), ,)(0)输出是s字符串通过,分割后的第i个数组内的字符再次使用,分割后的第0个数组内的字符
比如s=,1,2,3,4,5,
此时AllNum1(LineNum1)=5,LineNum1=1
For i = 1 To AllNum1(LineNum1)
NumberNum1(LineNum1, i) = Split(Split(s, ,)(i), ,)(0)
Next i
split过程如下
Split(s, ,)(0)=
Split(s, ,)(1)=1
Split(s, ,)(2)=2
Split(s, ,)(3)=3
Split(s, ,)(4)=4
Split(s, ,)(5)=5
Split(s, ,)(6)=
外面再有一级split
是将上面分割的字符串再次通过 ,分割并取分割后的第一个字符