4. ***999 , 13,17,19.
procedure TForm1.Button1Click(Sender: TObject);
var a,n, i:integer;
begin
for i:=100 to 999 do begin
n:=1000*i+999;
if ((n mod 13)=0) and ((n mod 17)=0) and ((n mod 19)=0)
then
memo2.lines.add(inttostr(n));
end;
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
memo2.clear;
end;
end.
// 1) n:= 100000, 999999,1
// 2) if ((n mod 13)=0) and ((n mod 17)=0) and ((n mod 19)=0)
9. , . , , 2,3,4,5 6 . 7 , . .
procedure TForm1.Button1Click(Sender: TObject);
var n:integer;
begin
n:=strtoint(edit1.Text);
for n:=1 to n do
if (n mod 2=1) and (n mod 3=1) and (n mod 4=1) and (n mod 5=1) and (n mod 6=1)
and (n mod 7=0)
then memo1.Lines.Add(inttostr(n))
end;
procedure TForm1.edit1onkeypress(Sender: TObject; var Key: Char);
begin
case key of
'0'..'9',#8:;
#13: button1.setfocus;
else key:=chr(0);
end;
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
memo1.Clear;
end;
end.
// 1) n:=1,500,1
// 2) if (n mod 2=1) and (n mod 3=1) and
(n mod 4=1) and (n mod 5=1) and (n mod 6=1)
4.
4. a[1..10]. ( :
Var form1: tform1;
a:array[1..10] of integer
max, i, k:integer;
procedure TForm1.Button1Click(Sender: TObject);
begin
max:=a[i-1];
for i:=2 to 10 do
if a[i]>max then
begin
max:=a[i];
k:=i;
end;
label1.caption:=inttostr(max);
label2.caption:=inttostr(k);
end;
// 1) for i:=2 to 10 do
If a[i]>max then
Random 4 9:
procedure TForm1.Button2Click(Sender: TObject);
begin
randomize;
for i:=1 to 10 do
begin
a[i]:=random(100); ( 9 -10, )
stringgrid1.cells[i-1,0]:=inttostr(a[i]);
end;
end;
end.(? )
9. .
procedure TForm1.Button1Click(Sender: TObject);
var i,k:integer;
begin
randomize;
for i:=1 to 25 do
begin
a[i]:=random(20)-10;
stringgrid1.Cells[i-1,0]:=inttostr(a[i]);
end;
end;
procedure TForm1.Button2Click(Sender: TObject);
var i,k,l:integer;
begin
k:=1;
for i:=1 to 25 do begin
if (a[i]>0) then
begin
b[k]:=a[i];
k:=k+1;
end;
stringgrid2.cells[k-1,0]:=inttostr(b[k]);
begin
for l:=1 to k do begin
n:=b[3]+b[6];
label1.caption:=inttostr(n);
end;
end;
end;
end;
procedure TForm1.Button3Click(Sender: TObject); // 2
var
m, n: Integer;
begin
with StringGrid2 do
|
|
|
for m:= 0 to ColCount - 1 do
for n:= 0 to RowCount - 1 do
Cells[m, n]:= '';
end;
end.
//1)- n:=1,25,1 2) - a[i]>0 3) - l:=1,k,1
5. .
4. , . . ( input.txt output.txt).
procedure TForm1.Button2Click(Sender: TObject);
begin
if opendialog1.Execute then
memo1.Lines.LoadFromFile(opendialog1.FileName);
end;
procedure TForm1.Button3Click(Sender: TObject);
begin
if savedialog1.execute then
memo1.Lines.SaveToFile(savedialog1.filename+'.txt');
end;
procedure TForm1.Button1Click(Sender: TObject);
var n,i,k:integer;s:string;
begin
assignfile(f1,'input.txt');
assignfile(f2,'output.txt');
reset(f1);
read(f1,s);
rewrite(f2);
k:=0;
for i:=1 to length(s) do
begin
if ((s[i]='') or (s[i]='')) then
k:=k+1;
end;
writeln(f2,k);
memo2.lines.add(inttostr(k));
closefile(f1);
closefile(f2);
end;
end.
// 1) i:=1,length(s),1
// 2) if ((s[i]='') or (s[i]=''))
9. , . ( input.txt output.txt).
procedure TForm1.Button1Click(Sender: TObject);
var i,c:integer;s:string;
begin
assignfile(f1,'input.txt');
assignfile(f2,'output.txt');
reset(f1);
read(f1,s);
rewrite(f2);
for i:=1 to length(s) do
begin
if (s[i]='.') then
delete(s,i,c);
c:=length(s)-i;
end;
writeln(f2,s);
memo2.Lines.add(s);
closefile(f1);
closefile(f2);
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
if opendialog1.Execute then
memo1.Lines.LoadFromFile(opendialog1.FileName);
end;
procedure TForm1.Button3Click(Sender: TObject);
begin
if savedialog1.execute then
memo1.Lines.SaveToFile(savedialog1.filename+'.txt');
end;
end.
//1) i:=1,length(s),1
//2) if (s[i]='.')
6.
4. 100 , , .
procedure TForm1.Button1Click(Sender: TObject);
var
i:integer;
x,y:real;
begin
for i:= 1 to 100 do // 1)
begin
x:=Image1.Width div 2+(Image1.Width div 2)*sin(i/2); //2)
y:=Image1.Height div 2+(Image1.Height div 2)*cos(i/2); //3)
with Image1.Canvas do
begin
MoveTo(Image1.Width div 2, Image1.Height div 2); //4)
LineTo(round(x),round(y)); // 5)
end;
end;
end;
end.
9. .
function f(x:real):real;
begin
f:=x*x*x;
end;
procedure TForm1.Button1Click(Sender: TObject);
var
x1, x2, y1, y2, x, y, dx, mx, my: real;
l, b, w, h, x0, y0: integer;
begin
l:= 10;
b:= Form1.image1.ClientHeight - 20;
h:= Form1.image1.ClientHeight - 40;
w:= Form1.image1.Width - 40;
x1:= 0;
x2:= 5;
dx:= 0.01;
y1:= f(x1);
y2:= f(x1);
x:= x1;
repeat
y:= f(x);
if y < y1 then y1:= y; //2)
if y > y2 then y2:= y; //3)
x:= x + dx;
until (x >= x2); //1)
my:= h / abs(y2 - y1);
mx:= w / abs(x2 - x1);
x0:= l;
y0:= b - Abs(Round(y1 * my));
with form1.Canvas do
begin
MoveTo(l, b); LineTo(l, b - h);
MoveTo(x0, y0); LineTo(x0 + w, y0);
x:= x1;
repeat
y:= f(x);
Pixels[x0 + Round(x * mx), y0 Round(y * my)]:= clRed;
|
|
|
x:= x + dx;
until (x >= x2); //4)
end;
end;
procedure TForm1.formresize(Sender: TObject);
begin
form1.image1.Canvas.FillRect(Rect
(0, 0, ClientWidth, ClientHeight));
end;
end.
end;
end;
end.
:
Delphi, , . : button, edit, memo, stringgrid, label, opendialog, savedialog. : caption, text, lines. , onkeypress, showmessage. (halt), (form().show), memo(memo( memo).clear).
Delphi canvas.
:
1. .. Delphi . .: - , 2004.-299 .:.
2. ., ., . . .: -; , 1998,592 .
3. .. Delphi.-2- ., . ./.. , .. . .-, 2008.-576.:. +CD-ROM
4. Google
