begin
D:=StrToFloat(Edit1.Text);
if (Edit1.Text <= '3' ) And (Edit2.Text >= '1') and (Edit3.Text = '1' ) then
begin
Edit4.Text := '6,3' ;
Edit5.Text := '11-12';
Edit6.Text := '60';
Edit7.Text := '100';
end
else
begin
if(Edit1.Text <= '3' ) And (Edit2.Text >= '1') and (Edit3.Text = '2' ) then
Edit4.Text := '3,2' ;
Edit5.Text := '9-10';
Edit6.Text := '25';
Edit7.Text := '40'
end
else
begin
if(Edit1.Text <= '3' ) And (Edit2.Text >= '1') and (Edit3.Text = '3' ) then
Edit4.Text := '1,6' ;
Edit5.Text := '8-9';
Edit6.Text := '25';
Edit7.Text := '40';
end
end;
我在识别if else
Delphi 7语句的问题时遇到了一些麻烦[错误] Unit1.pas(73):“;”正常,但'BEGIN'发现错误。
您的代码有不匹配的begin..end
对。修复缩进,您会更清楚地看到这一点:
begin
D:=StrToFloat(Edit1.Text);
if (Edit1.Text <= '3' ) And (Edit2.Text >= '1') and (Edit3.Text = '1' ) then
begin
Edit4.Text := '6,3' ;
Edit5.Text := '11-12';
Edit6.Text := '60';
Edit7.Text := '100';
end
else
begin
if (Edit1.Text <= '3' ) And (Edit2.Text >= '1') and (Edit3.Text = '2' ) then
Edit4.Text := '3,2';
Edit5.Text := '9-10';
Edit6.Text := '25';
Edit7.Text := '40'
end
else
begin
if(Edit1.Text <= '3' ) And (Edit2.Text >= '1') and (Edit3.Text = '3' ) then
Edit4.Text := '1,6' ;
Edit5.Text := '8-9';
Edit6.Text := '25';
Edit7.Text := '40';
end
您有错误的if..else..else
序列。
我猜你是想做更多类似的事情:
begin
D := StrToFloat(Edit1.Text);
if (Edit1.Text <= '3') And (Edit2.Text >= '1') and (Edit3.Text = '1') then
begin
Edit4.Text := '6,3' ;
Edit5.Text := '11-12';
Edit6.Text := '60';
Edit7.Text := '100';
end
else if (Edit1.Text <= '3') And (Edit2.Text >= '1') and (Edit3.Text = '2') then
begin
Edit4.Text := '3,2';
Edit5.Text := '9-10';
Edit6.Text := '25';
Edit7.Text := '40'
end
else if (Edit1.Text <= '3' ) And (Edit2.Text >= '1') and (Edit3.Text = '3') then
begin
Edit4.Text := '1,6' ;
Edit5.Text := '8-9';
Edit6.Text := '25';
Edit7.Text := '40';
end
...
可以简化一些以删除多余的比较:
begin
D := StrToFloat(Edit1.Text);
if (Edit1.Text <= '3') And (Edit2.Text >= '1') then
begin
if (Edit3.Text = '1') then
begin
Edit4.Text := '6,3' ;
Edit5.Text := '11-12';
Edit6.Text := '60';
Edit7.Text := '100';
end
else if (Edit3.Text = '2') then
begin
Edit4.Text := '3,2';
Edit5.Text := '9-10';
Edit6.Text := '25';
Edit7.Text := '40'
end
else if (Edit3.Text = '3') then
begin
Edit4.Text := '1,6' ;
Edit5.Text := '8-9';
Edit6.Text := '25';
Edit7.Text := '40';
end
...
end
...
[另外,请注意,您不能使用<=
和>=
之类的运算符来比较字符串,就好像它们是数字一样。您必须先将字符串值转换为数字值。您似乎已经通过使用StrToFloat()
意识到了这一点,但是此后您将忽略该值。尝试这样的事情:
begin
D1 := StrToFloat(Edit1.Text);
D2 := StrToFloat(Edit2.Text);
D3 := StrToFloat(Edit3.Text);
if (D1 <= 3) And (D2 >= 1) then
begin
if (D3 = 1) then
begin
Edit4.Text := '6,3' ;
Edit5.Text := '11-12';
Edit6.Text := '60';
Edit7.Text := '100';
end
else if (D3 = 2) then
begin
Edit4.Text := '3,2';
Edit5.Text := '9-10';
Edit6.Text := '25';
Edit7.Text := '40'
end
else if (D3 = 3) then
begin
Edit4.Text := '1,6' ;
Edit5.Text := '8-9';
Edit6.Text := '25';
Edit7.Text := '40';
end
...
end
...