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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105
7
章
関数
Cプログラムの命令はすべて関数の中にある。関数は何らかのタスクを行う。
main()
は
特別な関数名で、プログラム開始時に最初に実行される。他の関数は
main()
のサブルーチ
ン（あるいは、コールバック関数のような依存プロシージャ）で、任意の名前を使うことが
できる。
関数が定義されるのは1回だけで、プログラムは関数を宣言して必要なときに呼び出す。
7.1
関数定義
関数の定義は、関数宣言子（ヘッダ）と関数ブロックからなる。関数宣言子は、関数名、
戻り値型、および引数の型と名前を（あれば）規定する。関数ブロックの文は関数が何をす
るかを示す。関数定義の一般形は次のようになる。
type name
(
parameter_declarations
)
関数宣言子
{
/*
宣言、文
*/
関数ブロック
}
関数宣言子の
name
は関数名、
type
は関数の戻り値を定義する少なくとも1つの型指定子
である。戻り値は、
void
または配列型を除くオブジェクト型でもよい。
type
には、
inline
または
_Noreturn
という関数指定子、および/または、
extern
または
static
という記憶域ク
ラス指定子が含まれても構わない。
関数は、関数または配列を返すことはできない。関数または配列へのポインタを返す関
数を定義することはできる。
parameter_declarations
は関数引数の宣言をカンマで区切った列である。引数を持たない
ときは、空あるいは
void
となる。
関数の型とは、戻り値型と全引数型との組
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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.