逗号在C#statament中

Question

我正在审查此代码(用C#编写):

string root = match.Groups[1].Value,
                secon = match.Groups[2].Success ? match.Groups[2].Value.Substring(1) : string.Empty,
                third = match.Groups[3].Success ? match.Groups[3].Value.Substring(1) : string.Empty;

有人可以解释逗号的目的吗？

Answer 1

它声明的类型的3个变量string命名root,secon并third分别.像这样:

int a, b, c;