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
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.
c16rtomb
363
■
例
/*
最初の
128
バイト値のワイド文字の表を作る
*/
wchar_t low_table[128];
for (int i = 0; i < 128 ; i++)
{
low_table[ i ] = (wchar_t)btowc(i)
}
■
参照
●
wctob()
,
mbtowc()
,
wctomb()
c16rtomb
C11
16
ビット
Unicode
文字をマルチバイト文字に変換する
#include <uchar.h>
size_t c16rtomb(char* restrict
dst
, char16_t
c16
, mbstate_t* restrict
ps
);
関数
c16rtomb()
はワイド文字引数
c16
に対応するマルチバイト表現を決定し、結果をア
ドレス
dst
から始まる
char
配列に、必要なシフトシーケンスを含めて格納する。配列に書
き出されるバイト数は高々
MB_CUR_MAX
である。第3引数
ps
は、文字変換に考慮される現在
のシフト状態を含むオブジェクトを指す。関数
c16rtomb()
は、
ps
で参照されるシフト状態
も更新して、次の文字変換に適切なシフト状態を表すようにする。
c16
がナル文字なら
c16rtomb()
は配列にゼロバイトを書くが、必要ならシフト状態を初期
状態に戻すシフトシーケンスを先行させる。その場合、
ps
で参照される状態変数は初期シ
フト状態を表すよう更新される。
引数
dst
がナルポインタなら、関数呼び出しが
c16rtomb(buf,
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.