February 2019
Intermediate to advanced
332 pages
4h 23m
Japanese
Content preview from Modern C++チャレンジ ―C++17プログラミング力を鍛える100問
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,
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.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.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.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.
11章暗号
問題
![[Q088]](/api/v2/epubs/urn:orm:book:9784873118697/files/images/Q088.png)
シーザー暗号
右回転とシフト値を使ったシーザー暗号を使用して、メッセージを暗号化したり復号するプログラムを書きなさい。簡単のために、このプログラムではテキスト中の大文字のみをエンコードし、記号、その他の種類の文字は無視します。
![[Q089]](/api/v2/epubs/urn:orm:book:9784873118697/files/images/Q089.png)
ヴィジュネル暗号
ヴィジュネル暗号を使用してメッセージを暗号化したり復号するプログラムを書きなさい。簡単のために、暗号化する平文メッセージ入力は大文字だけとします。
![[Q090]](/api/v2/epubs/urn:orm:book:9784873118697/files/images/Q090.png)
base64符号化と復号
base64符号体系を使ってバイナリデータを符号化、復号するプログラムを書きなさい。サードパーティライブラリを使わず、符号化および復号関数を自分で実装しなければなりません。符号化に使うテーブルはMIME仕様とします。
![[Q091]](/api/v2/epubs/urn:orm:book:9784873118697/files/images/Q091.png)
ユーザの資格情報を検証する
セキュリティシステムでユーザの資格を認証する方式をシミュレーションするプログラムを書きなさい。前もってシステムに登録されているユーザのみがログインできるものとします。ユーザがユーザ名とパスワードを入力すると、プログラムは登録ユーザにマッチしているかチェックします。マッチしていればユーザはシステムにアクセスできますが、そうでないと操作は失敗します。セキュリティのために、システムはパスワードを記録せず、 ...
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.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.