При нажатии на кнопку Button, суммируем значения цифр из Edit.
Код программы:
Unit1.cpp
//--------------------------------------------------------------------------- #include <vcl.h> #pragma hdrstop #include "Unit1.h" //--------------------------------------------------------------------------- #pragma package(smart_init) #pragma resource "*.dfm" TForm1 *Form1; //--------------------------------------------------------------------------- __fastcall TForm1::TForm1(TComponent* Owner) : TForm(Owner) { } //--------------------------------------------------------------------------- void __fastcall TForm1::Button1Click(TObject *Sender) { Label4 ->Caption=StrToInt(Edit1->Text)+StrToInt(Edit2->Text); } //---------------------------------------------------------------------------
Unit1.h
//--------------------------------------------------------------------------- #ifndef Unit1H #define Unit1H //--------------------------------------------------------------------------- #include <System.Classes.hpp> #include <Vcl.Controls.hpp> #include <Vcl.StdCtrls.hpp> #include <Vcl.Forms.hpp> //--------------------------------------------------------------------------- class TForm1 : public TForm { __published: // IDE-managed Components TEdit *Edit1; TEdit *Edit2; TLabel *Label1; TLabel *Label2; TLabel *Label3; TLabel *Label4; TButton *Button1; void __fastcall Button1Click(TObject *Sender); private: // User declarations public: // User declarations __fastcall TForm1(TComponent* Owner); }; //--------------------------------------------------------------------------- extern PACKAGE TForm1 *Form1; //--------------------------------------------------------------------------- #endif
StrToInt - Преобразует строку в целое число.