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std::fgets

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C estilo de I / O
Buffers
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Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(obsoleta)
Streams
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Streams
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Abstrações
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Abstractions
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String I/O
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C estilo de I / O
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fread
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Não formatado entrada / saída
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Unformatted input/output
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remove
rename
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tmpnam
 
Defined in header <cstdio>
char *fgets( char *str, int count, FILE *stream );
Lê a maioria dos personagens count - 1 do fluxo determinado arquivo e armazena-os em str. A cadeia de caracteres produzido é sempre NULL terminada. Análise de pára se fim-de-arquivo ocorre ou um caractere de nova linha é encontrada, caso em que str que irá conter caractere de nova linha.
Original:
Reads at most count - 1 characters from the given file stream and stores them in str. The produced character string is always NULL-terminated. Parsing stops if end-of-file occurs or a newline character is found, in which case str will contain that newline character.
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Índice

[editar] Parâmetros

str -
String para ler os caracteres a
Original:
string to read the characters to
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count -
o comprimento de str
Original:
the length of str
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stream -
arquivo de fluxo para ler os dados a partir de
Original:
file stream to read the data from
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[editar] Valor de retorno

str no sucesso NULL, em um erro
Original:
str on success, NULL on an error
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[editar] Exemplo

#include <iostream>
#include <cstdio>
#include <cstdlib>
 
int main()
{
    FILE* tmpf = std::tmpfile();
    std::fputs("Alan Turing\n", tmpf);
    std::fputs("John von Neumann\n", tmpf);
    std::fputs("Alonzo Church\n", tmpf);
 
    std::rewind(tmpf);
    char buf[8];
    while (std::fgets(buf, sizeof buf, tmpf) != NULL) {
        std::cout << '"' << buf << '"' << '\n';
    }
}

Output:

"Alan Tu"
"ring
"
"John vo"
"n Neuma"
"nn
"
"Alonzo "
"Church
"

[editar] Veja também

lê entrada formatada de stdin, um fluxo de arquivo ou um tampão
Original:
reads formatted input from stdin, a file stream or a buffer
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(função) [edit]
lê uma cadeia de caracteres de stdin
Original:
reads a character string from stdin
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(função) [edit]
escreve uma seqüência de caracteres para um fluxo de arquivo
Original:
writes a character string to a file stream
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(função) [edit]
C documentation for fgets