feof
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Definido no cabeçalho <stdio.h> | ||
int feof(FILE*stream ); | ||
Verifica se o fim do fluxo determinado arquivo foi atingido.
Original:
Checks if the end of the given file stream has been reached.
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Índice |
[editar]Parâmetros
| stream | - | o fluxo de arquivo para verificar 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. |
[editar]Valor de retorno
valor diferente de zero se o fim do fluxo foi atingido, de outro modo 0
Original:
nonzero value if the end of the stream has been reached, otherwise 0
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[editar]Notas
Esta função só informa o estado de fluxo, conforme relatado pelo mais recente operação I / O, que não examina a fonte de dados associado. Por exemplo, se o que eu mais recentes / O foi um fgetc, que retornou o último byte de um arquivo,
feof retorna não-zero. O fgetc próxima falha e muda o estado de fluxo para' fim-de-arquivo. Só então feof retorna zero.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.
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Em utilização normal, o processamento pára no fluxo de entrada de qualquer erro, e
feofferrror são então utilizados para distinguir entre as condições de erro diferentes.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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[editar]Exemplo
#include <stdio.h>#include <stdlib.h> int main(){FILE* fp =fopen("test.txt", "r");if(!fp){perror("File opening failed");returnEXIT_FAILURE;} int c;// note: int, not char, required to handle EOFwhile((c =fgetc(fp))!=EOF){// typical file reading loopputchar(c);} if(ferror(fp))puts("I/O error when reading");elseif(feof(fp))puts("End of file reached successfully");}
[editar]Veja também
elimina erros 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. (função) | |
exibe uma seqüência de caracteres correspondente do erro atual para 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. (função) | |
verifica um erro de arquivo 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. (função) | |
C++ documentation for feof | |
