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, C++ Builder, Windows. . , , . , . , - , ++ Builder . : , , - .

. . C++ Builder , . .

(-) , , , .

C++ Builder , . , Button1, , :

 

void __fastcall TForm1::Button1Click(TObject *Sender)

{

}

.

"", Events OnClick. .

? -, a, b c; , Text Edit ; Edit4 Edit5.

, .

void __fastcall TForm1::Button1Click(TObject *Sender)

{

float a,b,c,d,x1,x2;

a=StrToFloat(Edit1->Text);

b=StrToFloat(Edit2->Text);

c=StrToFloat(Edit3->Text);

d=b*b-4*a*c;

if (d>=0)

{

x1=(-b-sqrt(d))/(2*a);

x2=(-b+sqrt(d))/(2*a);

Edit4->Text=FloatToStr(x1);

Edit5->Text=FloatToStr(x2);

}

else

ShowMessage(" ");

}

#include<math.h>

( ).

.

, .

StrToFloat() FloatToStr() . Windows ShowMessage().

"". Button2Click

Form1->Close();

Close() , .

. . , .

. . "" "".

"". Events OnClick Button1Click. "", Button2Click. "", OnClik, N3Click

Form2->ShowModal();

#include "__.h".

__ , .

ShowModal() , , ( ).

"" OnClick Button1Click; Button2Click. "" , , "".

StatusBar1. , Properties , SimplePanel True.

FormCreate :

void __fastcall TForm1::FormCreate(TObject *Sender)

{

StatusBar1->SimpleText=" ";

}

.


 





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