Buat aplikasi baru
Tempatkan 2 buah edit, dua buah label, empat radiobutton dan satu tombol pada form
Ubah sedemikian rupa sehingga menjadi seperti gambar kedua
Dobelklik tombol “Hitung”, isi dengan perintah berikut
if radiobutton1.Checked=true then begin
edit3.Text:=inttostr(strtoint(edit1.Text)+strtoint(edit2.Text));
end else if radiobutton2.Checked=true then begin
edit3.Text:=inttostr(strtoint(edit1.Text)-strtoint(edit2.Text));
end else if radiobutton3.Checked=true then begin
edit3.Text:=inttostr(strtoint(edit1.Text)*strtoint(edit2.Text));
end else if radiobutton4.Checked=true then begin
edit3.Text:=floattostr(strtoint(edit1.Text)/strtoint(edit2.Text));
end;
jalankan program
sebagai pelengkap, tambahkan perintah pada radiobutton sedemikian sehingga jika kita memilih “Pengurangan”, maka otomatis label1 menjadi “-”
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