[题目]输入一段文章(255个字符以内),求文章中单词的个数,相同单词只记一次,The 和 the 视作相同. [敲代码] //网友代码 var article,w:string; arr:array[..] of string; i,len,ans:longint; function check(w:string):boolean; var i:longint; begin then exit(true); to len do if arr[i]=w then exit(false); exi