feof
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<metanoindex/>
<tbody> </tbody>| definiert in Header <stdio.h>
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int feof( FILE *stream ); |
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Prüft, ob das Ende der angegebenen Datei-Stream erreicht wurde .
Original:
Checks if the end of the given file stream has been reached.
The text has been machine-translated via Google Translate.
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Parameter
| stream | - | der Datei-Stream zu überprüfen
Original: the file stream to check The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
Rückgabewert
Null-Wert, wenn das Ende des Stroms erreicht ist, andernfalls
0Original:
nonzero value if the end of the stream has been reached, otherwise
0The text has been machine-translated via Google Translate.
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Notes
Diese Funktion meldet nur den Strom Staat als von der jüngsten I / O-Operation berichtet, ist es nicht untersuchen die zugeordneten Datenquellen. Zum Beispiel, wenn die neueste I / O war ein
fgetc, das das letzte Byte einer Datei zurückgeführt, kehrt feof ungleich Null. Der nächste fgetc ausfällt und ändert den Strom Staat end-of-file. Erst dann feof Null zurück .Original:
This function only reports the stream state as reported by the most recent I/O operation, it does not examine the associated data source. For example, if the most recent I/O was a
fgetc, which returned the last byte of a file, feof returns non-zero. The next fgetc fails and changes the stream state to end-of-file. Only then feof returns zero.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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In der typischen Anwendung, stoppt Input Stream Processing bei jedem Fehler;
feof und ferrror werden dann verwendet, um zwischen verschiedenen Fehlerbedingungen unterscheiden .Original:
In typical usage, input stream processing stops on any error;
feof and ferrror are then used to distinguish between different error conditions.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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Beispiel
#include <stdio.h>
#include <stdlib.h>
int main()
{
FILE* fp = fopen("test.txt", "r");
if(!fp) {
perror("File opening failed");
return EXIT_FAILURE;
}
int c; // note: int, not char, required to handle EOF
while ((c = fgetc(fp)) != EOF) { // typical file reading loop
putchar(c);
}
if (ferror(fp))
puts("I/O error when reading");
else if (feof(fp))
puts("End of file reached successfully");
}
Siehe auch
löscht Fehler Original: clears errors The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion) | |
zeigt eine Zeichenfolge entspricht der aktuellen Fehler stderr Original: displays a character string corresponding of the current error to stderr The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion) | |
Prüfungen für eine Datei Fehler Original: checks for a file error The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion) | |
C++ documentation for feof
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