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Kamis, 29 Oktober 2015

CONTOH MENU PILIHAN PASCAL

PASCAL ALGORITMA


program Menu_Pilihan;
{I.S. : user memilih salah satu menu}
{F.S. : menampilkan hasil sesuai menu yang dipilih}
uses crt;
var
   Menu, N, i, pertama, terakhir, fibo : integer;
   nama1, nama2, nama3                 : string;
   X, S                                : real;

begin
   repeat
      textbackground(blue); clrscr;
      textcolor(yellow);
      gotoxy(34,8);  write('Menu Pilihan');
      gotoxy(34,9);  write('============');
      gotoxy(23,10); write('1. Menghitung S=1-2/3+3/6-4/10+..');
      gotoxy(23,11); write('2. Menyusun tiga nama secara ASC');
      gotoxy(23,12); write('3. Membuat barisan Fibonacci');
      gotoxy(23,13); write('0. Keluar');
      gotoxy(23,15); write('Pilihan Anda ?  ');
      readln(Menu);
      {Validasi menu pilihan}
      while (Menu < 0) or (Menu > 3) do
      begin
        gotoxy(23,16); textcolor(white);
        write('Salah memilih menu, Ulangi..Tekan Enter!');
        readln;
        gotoxy(23,16); clreol; textcolor(15);
        gotoxy(37,15); clreol;  readln(Menu);  textcolor(15);
      end; //endwhile

      case (Menu) of
           1 : begin
                 clrscr;
                 {Validasi Menghitung S}
                 writeln('Menghitung S=1-2/3+3/6-4/10+..');
                 writeln('==============================');
                 write('Banyaknnya suku (N) : ');
                 readln (N);
                 S := 0;
                 X := 0; {penyebut}
                 write('S = ');
                 for i := 1 to N do
                 begin
                   X := X + i;
                   if (i mod 2 =1)
                   then
                   begin
                       S := S + i/X;
                       if(i = 1)
                       then
                         write(i)
                       else
                         write(' + ',i,'/',X:0:0);
                   end
                   else
                   begin
                       S := S - i/X;
                       write(' - ',i,'/',X:0:0);
                   end;
                 end; //endfor
                 writeln;
                 writeln('  = ',S:0:1);
                 writeln('Tekan enter untuk kembali ke menu utama');
                 readln;
               end;

            2 : begin
                 clrscr;
                 {Validasi menyusun tiga nama secara Ascending}
                 writeln('Menyusun tiga nama secara Ascending');
                 writeln('===================================');
                 write('Masukkan nama 1 : '); readln(nama1);
                 write('Masukkan nama 2 : '); readln(nama2);
                 write('Masukkan nama 3 : '); readln(nama3);
                 writeln;
                 begin
                   if (nama1 <= nama2) and (nama2 <= nama3)
                   then
                      writeln(nama1,' ',nama2,' ',nama3)
                   else
                   if (nama1 <= nama3) and (nama3 <= nama2)
                   then
                       writeln(nama1,' ',nama3,' ',nama2)
                   else
                   if (nama2 <= nama1) and (nama1 <= nama3)
                   then
                       writeln(nama2,' ',nama1,' ',nama3)
                   else
                   if (nama1 >= nama2) and (nama2 <= nama3)
                   then
                       writeln(nama2,' ',nama3,' ',nama1)
                   else
                   if (nama1 >= nama3) and (nama1 <= nama2)
                   then
                       writeln(nama3,' ',nama1,' ',nama2)
                   else
                   if (nama1 >= nama3) and (nama3 <= nama2)
                   then
                       writeln(nama3,' ',nama2,' ',nama1)
                 end;
                 writeln;
                 writeln('Tekan enter untuk kembali ke menu utama');
                 readln;
               end;

             3 : begin
                 clrscr;
                 {validasi memasukkan nilai N untuk membuat barisan Fibonacci}
                 writeln('Membuat barisan Fibonacci');
                 writeln('=========================');
                 write('Masukkan nilai Fibonacci ke-N : ');
                 readln(N);
                 pertama := 0;
                 terakhir:= 1;
                 fibo    := 1;
                 i       := 1;
                 while (i <= N) do
                 begin
                   write(fibo,' ');
                   i:=i + 1;
                   fibo:=pertama + terakhir;
                   pertama:=terakhir;
                   terakhir:=fibo;
                 end; //endwhile
                 writeln;
                 writeln('Tekan enter untuk kembali ke menu utama');
                 readln;
               end;
               end;
   until(Menu=0);
end.