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Cクイックリファレンス 第2版
book

Cクイックリファレンス 第2版

by Peter Prinz, Tony Crawford, 黒川 利明, 島 敏博
November 2016
Beginner to intermediate
816 pages
19h 58m
Japanese
O'Reilly Japan, Inc.
Content preview from Cクイックリファレンス 第2版
div
393
difftime
2
つの算術時間値の差を計算する
#include <time.h>
double difftime(time_t
time2
, time_t
time1
);
difftime()
関数は2つの時間値の差
time2 –
time1
を秒数で返す。
difftime()
は型
double
だが、引数は型
time_t
となる。
time_t
型は通常
long
unsigned long
のような整数型で定
義されるが、整数型でなくてもよい。
difftime()
に渡す引数値を求めるには通常、現在の時刻を単一算術値で返す
time()
関数
を続けて呼び出す。
本章の
clock()
のプログラム例を参照。
参照
asctime()
,
ctime()
,
gmtime()
,
localtime()
,
mktime()
,
strftime()
,
time()
div
整数除算を実行して商と余りを返す
#include <stdlib.h>
div_t div(int
dividend
, int
divisor
);
ldiv_t ldiv(long
dividend
, long
divisor
);
lldiv_t lldiv(long long
dividend
, long long
divisor
); (C99)
div()
関数は、整数
dividend
を整数
divisor
で割り、商の整数部分を余りとともに名前が
quot
rem
2つの整数メンバからなる構造体に格納して返す。
div()
は、商と余りを
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Publisher Resources

ISBN: 9784873117812Other