program keisan;
var
a, b, seki, amari : Integer;
x, y : Real;
syo : Real;
begin
WriteLn('Aの値を入力してください:');
ReadLn(a);
WriteLn('Bの値を入力してください:');
ReadLn(b);
seki := a * b;
x := a + b;
y := a - b;
WriteLn('AとBの積は:', seki);
WriteLn('AとBの和は:', x:5:2);
WriteLn('AとBの差は:', y:5:2);
if b = 0 then
begin
WriteLn('Bが0なので、割り算と余りは計算できません。');
end
else
begin
syo := a / b;
amari := a mod b;
WriteLn('AとBの商は:', syo:5:2);
WriteLn('AをBで割った余りは:', amari);
end;
end.
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