自己寫 split()

 using System;

public class Program

{

public static void Main()

{

string a = "10,20";

string[] b = new string[2];

//b = a.Split(',');

string tem = "";

foreach(char ch in a)

if (ch==',')

{

b[0]=tem;

tem = "";

}

else

tem=tem+ch;

b[1]=tem;

Console.WriteLine(b[0]);

Console.WriteLine(b[1]);

string[] c = new string[2];

c = mySplit(a);

Console.WriteLine(c[0]);

Console.WriteLine(c[1]);

}

public static string[] mySplit(string a)

{

string[] b = new string[2];

string tem = "";

foreach(char ch in a)

if (ch==',')

{

b[0]=tem;

tem = "";

}

else

tem=tem+ch;

b[1]=tem;

return b;

}

}