August 2022
Intermediate to advanced
200 pages
5h 16m
Japanese
Content preview from Python1年生 第2版 体験してわかる！会話でまなべる！プログラミングのしくみ
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Chapter
2
30
いろいろな演算子でいろいろな計算ができる
足し算以外にも、引き算、かけ算、わり算などができます。このとき使う記号のことを
「演算子（えんざんし）」 といいます。
演算子の種類
記号 計算 記号 計算 記号 計算
+ 足し算 - 引き算 // わり算（小数部分を切り捨て）
* かけ算 / わり算 % わり算の余り
では、「print(100-1)」と入力してみましょう。今度は100-1の結果の「99」が表示されま
す。
>>> print(100-1)
99
ぎょぎょ。なんか難しい言葉が出てきたけど、アタシ「演算子（えんざ
んし）」なんて言葉、聞いたことないよ。
ふーん。もっとやさしい言葉でいってくれればいいのに。コンピュー
タが難しく感じるのって、そういうとこだと思うよ。
「演算子」っ て 聞き慣れない言葉だけど、学校で「＋」や「−」のことを「足
す記号」や「 引く記号」っ て 習ったでしょう。これらの記号をまとめて「演
算子」っていうんだよ。
ふむ、そうだね。なるべくわかりやすい言葉で説明するようにするよ。
入力プログラム
出力結果
Chapter
2
30
いろいろな演算子でいろいろな計算ができる
足し算以外にも、引き算、かけ算、わり算などができます。このとき使う記号のことを
「演算子（えんざんし）」
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.