Standard , . RadioGroup 1. (Caption) .
Items (cos (x), sin (x), tg (x)), . - .
Unit 1. h RadioGroup 1 TRadioGroup. RadioGroup 1-> ItemIndex ( ).
FormCreate () , , RadioGroup 1-> ItemIndex = 0.
, - Formreate Botton1lick . .
, . . 2.1.
. 2.1
:
//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include "Unit1.h"
#include <math.h>
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
: TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1:: FormCreate (TObject *Sender)
{
Edit1->Text="0,1";
Edit2->Text="0,356";
Edit3->Text="-3,5";
Memo1->Clear();
Memo1->Lines->Add(" 2");
RadioGroup1->ItemIndex = 0;
}
//---------------------------------------------------------------------------
void __fastcall TForm1:: Button1Click (TObject *Sender)
{
double x,y,z,u,ma;
x=StrToFloat(Edit1->Text);
y=StrToFloat(Edit2->Text);
z=StrToFloat(Edit3->Text);
//
switch(RadioGroup1->ItemIndex){
case 0: u=cos(x);
Memo1->Lines->Add("Cos(x)= "+FloatToStrF(u,ffFixed,8,6));
break;
case 1: u=sin(x);
Memo1->Lines->Add("Sin(x)= "+FloatToStrF(u,ffFixed,8,6));
break;
case 2: u=tan(x);
Memo1->Lines->Add("Tg(x)= "+FloatToStrF(u,ffFixed,8,6));
break;
}
// CheckBox1
if (CheckBox1->Checked){
u = fabs(u);
y = fabs(y);
z = fabs(z);
}
//
if (u>y) ma=u;
else ma=y;
if (z>ma) ma=z;
if (CheckBox1->Checked)
Memo1->Lines->Add("Max = "+FloatToStrF(ma,ffFixed,8,6));
else Memo1->Lines->Add("Max= "+FloatToStrF(ma,ffFixed,8,6));
}