var str1,str2:string; str3:string; begin str1:='123456'; str2:='abc'; //现将str1中的‘345’换为str2 str3:=copy(str1,1,2); str3:=str3+str2; str3:=str3+copy(str1,6,1); 则str3为替换后的字符串 end;
笨办法function strreplace(s:string,sub:string,ins:string):string; var i,n:integer; begin n:=length(s); i:=pos(s,sub); if i>0 then begin delete(s,i,n); Result:=insert(ins,s,i); end else showmessage('要替换字符串未找到!'); end;比如: ABC123GHI 中把123替换成DEF strreplace('ABC123GHI','123','DEF')就可以了
type TReplaceFlags = set of (rfReplaceAll, rfIgnoreCase);function StringReplace(const S, OldPattern, NewPattern: string; Flags: TReplaceFlags): string;
上面的是错的,不好意思,俺也是“新菜”。function strreplace(s:string,sub:string,ins:string):string; var i,n:integer; t:string; begin t:=s; n:=length(sub); i:=pos(t,sub); if i>0 then begin delete(t,i,n); insert(ins,t,i); Result:=t; end else showmessage('要替换字符串未找到!'); end;比如: ABC123GHI 中把123替换成DEF strreplace('ABC123GHI','123','DEF')就可以了
str1,str2:string;
str3:string;
begin
str1:='123456';
str2:='abc';
//现将str1中的‘345’换为str2
str3:=copy(str1,1,2);
str3:=str3+str2;
str3:=str3+copy(str1,6,1);
则str3为替换后的字符串
end;
var
i,n:integer;
begin
n:=length(s);
i:=pos(s,sub);
if i>0 then
begin
delete(s,i,n);
Result:=insert(ins,s,i);
end
else showmessage('要替换字符串未找到!');
end;比如: ABC123GHI 中把123替换成DEF
strreplace('ABC123GHI','123','DEF')就可以了
功能 返回字符串AText中用子串AFromText替换成子串AToText的结果
说明 不区分大小写
例子 Edit4.Text := AnsiReplaceText(Edit1.Text, Edit2.Text, Edit3.Text);
TReplaceFlags = set of (rfReplaceAll, rfIgnoreCase);function StringReplace(const S, OldPattern, NewPattern: string; Flags: TReplaceFlags): string;
var
i,n:integer;
t:string;
begin
t:=s;
n:=length(sub);
i:=pos(t,sub);
if i>0 then
begin
delete(t,i,n);
insert(ins,t,i);
Result:=t;
end
else showmessage('要替换字符串未找到!');
end;比如: ABC123GHI 中把123替换成DEF
strreplace('ABC123GHI','123','DEF')就可以了