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Варианты
Действия

perror

Материал из cppreference.com
< c | io

 
 
File input/output
Функции
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Functions
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Доступ к файлам
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File access
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Прямой ввод / вывод
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Direct input/output
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fread
fwrite
Неформатированная ввода / вывода
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Unformatted input/output
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Форматированный ввод / вывод
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Formatted input/output
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Позиционирование файла
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File positioning
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ftell
fgetpos
fseek
fsetpos
rewind
Обработка ошибок
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Error handling
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clearerr
feof
ferror
perror
Операции с файлами
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Operations on files
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remove
rename
tmpfile
tmpnam
 
Заголовочный файл <stdio.h>
void perror( const char *s );
Печать на stderr содержание нулем строку символов, на которую указывает s (если s является нулевым указателем), за которым следуют два символа ": ", после чего определяется реализацией сообщение об ошибке с описанием ошибки кода в настоящее время хранится в системной переменной errno (идентичный выходу strerror(errno)), а затем '\n'.
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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Содержание

[править] Параметры

s -
Указатель на завершающуюся нулем строку с пояснительной сообщении
Original:
pointer to a null-terminated string with explanatory message
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[править] Возвращаемое значение

(Нет)
Original:
(none)
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[править] Пример

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

Вывод:

open(): No such file or directory

[править] См. также

возвращает текстовую версию заданного кода ошибки
(функция) [edit]