November 2016
Beginner to intermediate
816 pages
19h 58m
Japanese
Content preview from Cクイックリファレンス 第2版
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628
18
章 標準ライブラリ関数
す
char
の配列に格納する（
dest
もナルポインタのことがあり、その場合には
wcsrtombs()
は実際には出力文字を格納しないで、
src
が指す位置のポインタも変更しない。関数はした
がってワイド文字列のマルチバイト表現の占めるであろうバイト数を返すだけだ）。
第3引数
n
は出力バッファに書ける最大文字数を指定する。各ワイド文字の変換は、
wcrtomb()
関数で実行される変換と同じであり、
state
で指す
mbstate_t
オブジェクトを更
新する。
変換は次の3つのイベントのいずれか最初で終了する。
終端ナル文字が出力バッファに書かれたとき
この場合
wcsrtombs()
はナルポインタを
src
で指された位置に格納し、変換による
結果のマルチバイトシーケンスのバイト数を返す。
state
で指すオブジェクトは初
期パース状態を表し、出力バッファに格納された終端ナル文字の前には初期パー
ス状態に達するのに必要なシフト
シーケンスがある。
もう1つマルチバイト文字を書いたら
n
バイトの最大長を超えるとき
src
で指された位置に最後に読まれたワイド文字の次の位置へのポインタを格納
し、
state
で指すオブジェクトは不完全出力文字列の現在のパース状態を表し、引
き続いて関数を呼び出せば文字列変換を継続できる。関数は変換による結果のマ
ルチバイトシーケンスのバイト数を返す。
読まれたワイド文字が正当なマルチバイト文字に変換できないとき
この場合、
wcsrtombs()
は
errno
変数を
EILSEQ ...
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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.