c语言正则表达式匹配字符串（正则中文字符串匹配）

由于我对正则不是很清楚，我想求取把字符串“str,DGK,rDJK,DJKl,DGK,end”替换为“str,MSN,rDJK,DJKl,MSN,end”
求匹配式的写法。

<SCRIPT LANGUAGE="VBScript"> <!-- Dim str,reg str= "str, DGK, rDGK, DGKl,DGK , end" Set reg=new RegExp reg.IgnoreCase=False reg.Global=True reg.Pattern="([\s|,])(DGK)([\s|,])" str=(reg.replace(str,"$1MSN$3")) Document.write(str) //--> </SCRIPT>

<script language="vbscript"> dim stringExample stringExample = "str, DGK, rDGK, DGKl,DGK , end" Set re = New RegExp re.Pattern = "(\b)DGK(\b)" re.Global = True re.IgnoreCase = True re.MultiLine = True stringExample = re.Replace(stringExample,"$1MSN$2") alert stringExample </script>

<script language="javascript"> var stringExample = "str, DGK, rDGK, DGKl,DGK , end"; var re = /(\b)DGK(\b)/gi; //这里的g就表示多次匹配，等同于VBSCRIPT的re.Global = True stringExample = stringExample.replace(re,"$1MSN$2"); alert(stringExample) </script>

<script language="javascript"> var stringExample = "str, DGK, rDGK, DGKl,DGK , end"; var re = /(\b)DGK(\b)/gi stringExample = stringExample.replace(re,function(s,a,b){ alert([a,b]) }) </script>

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