学步园

有一个E-mail地址：username@***.com，编一个程序，读出username.

 

 1 {------------------------------------------------------}
 2 {               从 ****@###.##中提取出****              }
 3 {------------------------------------------------------}
 4 function GetUserName(EmailAddress:string):string;
 5 var
 6   EdPosition : Integer;
 7 begin
 8   EdPosition := AnsiPos('@',EmailAddress);
 9   if EdPosition >0 then
10     begin
11       result :=Copy(EmailAddress,0,EdPosition-1);
12     end
13   else
14     Result := EmailAddress;
15 end;
16 

 

 

 

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