perror

 

C

言語

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動的なメモリ管理

エラー処理

プログラムユーティリティ

日付と時間のユーティリティ

ストリングスライブラリ

アルゴリズム

ニューメリック

入力/出力をサポートしています

ローカリゼーションサポート

スレッドのサポート (C11)

アトミック操作 (C11)

 

File input/output

機能します Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
ファイルアクセス Original: File access The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
fopen freopen fclose fflush	fwide setbuf setvbuf
直接入力/出力 Original: Direct input/output The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
fread
fwrite
書式なし入力/出力 Original: Unformatted input/output The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
fgetc fgets fputc fputs getchar gets putchar puts ungetc	fgetwc fgetws fputwc fputws getwchar putwchar ungetwc
書式付き入力/出力 Original: Formatted input/output The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
scanf fscanf sscanf vscanf vfscanf vsscanf (C99) (C99) (C99) printf fprintf sprintf snprintf (C99) vprintf vfprintf vsprintf vsnprintf (C99)	wscanf fwscanf swscanf vwscanf vfwscanf vswscanf (C99) (C99) (C99) wprintf fwprintf swprintf vwprintf vfwprintf vswprintf
ファイル位置付け Original: File positioning The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
ftell
fgetpos
fseek
fsetpos
rewind
エラー処理 Original: Error handling The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
clearerr
feof
ferror
perror
ファイルに対する操作 Original: Operations on files The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
remove
rename
tmpfile
tmpnam

 

Defined in header <stdio.h>
void perror( const char *s );

NULLで終わる文字列が現在のシステム変数に格納されているエラーコードを説明する実装定義のエラーメッセージが続く2文字stderr、続いて、（sがNULLポインターである場合を除きます）sが指すの": "内容へのプリントerrno（strerror(errno)の出力と同じ）、'\n'続く.

Original:

Prints to stderr the contents of the null-terminated character string pointed to by s (unless s is a null pointer), followed by the two characters ": ", followed by the implementation-defined error message describing the error code currently stored in the system variable errno (identical to the output of strerror(errno)), followed by '\n'.

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パラメータ

s

-

説明メッセージがNULLで終わる文字列へのポインタ Original: pointer to a null-terminated string with explanatory message The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

値を返します

（なし）

Original:

(none)

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例

#include <fcntl.h>
#include <stdio.h>
 
int main()
{
    if (open("non_existent", O_RDONLY) == -1) {
        perror("open()");
    }
}

Output:

open(): No such file or directory

も参照してください

strerror	指定したエラーコードのテキストバージョンを返します Original: returns a text version of a given error code The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (機能)
C++ documentation for perror