Whenever a modification of file contents is required is, it is necessa terjemahan - Whenever a modification of file contents is required is, it is necessa Bahasa Indonesia Bagaimana mengatakan

Whenever a modification of file con

Whenever a modification of file contents is required is, it is necessary to reach the spot where
the modification is desired. A file is sequence of bytes with the first byte as the 0 th byte. For a
reaching a particular spot you have to know how many bytes it is away from the beginning of
file or from the end of file in a backward motion. A file pointer points to a position in a file,
which is determined by the offset (number of bytes) from the beginning or from the end. You
would have understood that file pointer is different from the pointers we have used in arrays and
classes in which case the pointer value is the address (the byte number of the start byte) in allocated
memory in RAM. The file pointer is not the address, it is simply an offset in bytes from the
beginning of file or end or from current position. When a file is opened in the read mode the
file pointer is positioned at the beginning of the file. Similarly when file is opened in write mode
the pointer is again at the beginning of file because opening in write mode deletes the existing
contents of the file, so the pointer is positioned at the beginning of file. In case of append mode
(ios::app) the pointer is at the end of file ready to add the additional data. In the append mode
the existing contents remain intact. The Figure 19.5 illustrates the pointer positions for read, write
and append modes.Two pointers, i.e. input pointer and output pointer are associated with every file. The input
pointer which is used for reading the file from a particular location is called get pointer. The
output pointer which is used for writing in the file is called put pointer. The four functions listed
in Table 19.7 are used to shift the pointer to a location in the file.
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Whenever a modification of file contents is required is, it is necessary to reach the spot wherethe modification is desired. A file is sequence of bytes with the first byte as the 0 th byte. For areaching a particular spot you have to know how many bytes it is away from the beginning offile or from the end of file in a backward motion. A file pointer points to a position in a file,which is determined by the offset (number of bytes) from the beginning or from the end. Youwould have understood that file pointer is different from the pointers we have used in arrays andclasses in which case the pointer value is the address (the byte number of the start byte) in allocatedmemory in RAM. The file pointer is not the address, it is simply an offset in bytes from thebeginning of file or end or from current position. When a file is opened in the read mode thefile pointer is positioned at the beginning of the file. Similarly when file is opened in write modethe pointer is again at the beginning of file because opening in write mode deletes the existingcontents of the file, so the pointer is positioned at the beginning of file. In case of append mode(ios::app) the pointer is at the end of file ready to add the additional data. In the append modethe existing contents remain intact. The Figure 19.5 illustrates the pointer positions for read, writeand append modes.Two pointers, i.e. input pointer and output pointer are associated with every file. The inputpointer which is used for reading the file from a particular location is called get pointer. Theoutput pointer which is used for writing in the file is called put pointer. The four functions listedin Table 19.7 are used to shift the pointer to a location in the file.
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Hasil (Bahasa Indonesia) 2:[Salinan]
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Setiap kali modifikasi isi file diperlukan adalah, perlu untuk mencapai tempat di mana
modifikasi yang diinginkan. Sebuah file adalah urutan byte dengan byte pertama sebagai byte 0 th. Untuk
mencapai tempat tertentu Anda harus tahu berapa banyak byte itu jauh dari awal
file atau dari akhir file dalam gerakan mundur. Sebuah file pointer poin ke posisi dalam file,
yang ditentukan oleh offset (jumlah byte) dari awal atau dari akhir. Anda
akan mengerti bahwa file pointer berbeda dari pointer yang kita telah digunakan dalam array dan
kelas dalam hal nilai pointer adalah alamat (nomor byte dari awal byte) di dialokasikan
memori di RAM. File pointer tidak alamat, itu hanya sebuah offset dalam byte dari
awal file atau akhir atau dari posisi saat ini. Ketika file dibuka dalam modus membaca
pointer file diposisikan pada awal file. Demikian pula ketika file dibuka dalam mode tulis
pointer lagi pada awal file karena pembukaan dalam mode write menghapus yang ada
isi file, sehingga pointer diletakkan pada awal file. Dalam kasus modus menambahkan
(ios :: app) pointer berada pada akhir file siap untuk menambahkan data tambahan. Dalam modus menambahkan
isi yang ada tetap utuh. Gambar 19.5 mengilustrasikan posisi pointer untuk membaca, menulis
dan menambahkan modes.Two pointer, yaitu masukan pointer dan output pointer berkaitan dengan setiap file. Input
pointer yang digunakan untuk membaca file dari lokasi tertentu disebut get pointer. The
keluaran pointer yang digunakan untuk menulis pada file disebut menempatkan pointer. Empat fungsi yang tercantum
dalam Tabel 19.7 digunakan untuk menggeser pointer ke lokasi dalam file.
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