StrComp

最新推荐文章于 2023-12-15 20:46:22 发布

原创最新推荐文章于 2023-12-15 20:46:22 发布 · 1.7k 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#StrComp

C 专栏收录该内容

29 篇文章

订阅专栏

本文介绍了StrComp函数的使用方法及参数设置，该函数用于比较两个字符串，并返回比较结果。StrComp支持二进制和文本两种比较方式，通过设置compare参数为0或1来指定比较类型。文中还提供了示例代码，展示了不同比较方式下的结果。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

StrComp 为字符串比较的函数，不是标准数据类型的比较函数，==是标准数据类型的比较符，如果用==来比较字符串，相当于比较2字符串（数组）的首地址。compare参数为0或者省略时按二进制按顺序从第一个字符开始作比较字符串的ASCII值的大小，compare参数为1时按文本比较字符串大小且此时不区分大小写。

StrComp Function

Requirements

Version 1

Returns a value indicating the result of a string comparison.

StrComp(string1, string2[, compare])

Arguments

string1

Required. Any valid string expression.

string2

Required. Any valid string expression.

compare

Optional. Numeric value indicating the kind of comparison to use when evaluating strings. If omitted, a binary comparison is performed. See Settings section for values.

Settings

The compare argument can have the following values:

Constant	Value	Description
vbBinaryCompare	0	Perform a binary comparison.
vbTextCompare	1	Perform a textual comparison.

Return Values

The StrComp function has the following return values:

If	StrComp returns
string1 is less than string2	-1
string1 is equal to string2	0
string1 is greater than string2	1
string1 or string2 is Null	Null

Remarks

The following example uses the StrComp function to return the results of a string comparison. If the third argument is 1, a textual comparison is performed; if the third argument is 0 or omitted, a binary comparison is performed.

Dim MyStr1, MyStr2, MyComp
MyStr1 = "ABCD": MyStr2 = "abcd"   ' Define variables.
MyComp = StrComp(MyStr1, MyStr2, 1)   ' Returns 0.
MyComp = StrComp(MyStr1, MyStr2, 0)   ' Returns -1.
MyComp = StrComp(MyStr2, MyStr1)   ' Returns 1.