std::basic_streambuf::pbump
Aus cppreference.com
< cpp | io | basic streambuf
 | This page has been machine-translated from the English version of the wiki using Google Translate. The translation may contain errors and awkward wording. Hover over text to see the original version. You can help to fix errors and improve the translation. For instructions click here. |
void pbump(int count ); | ||
Positioniert die Schreibzeigers (
pptr()) durch count Zeichen, wobei count positiv oder negativ sein kann. Keine Schecks werden zum Bewegen der Zeiger außerhalb der Put-Bereich [pbase(), epptr()) getan .Original:
Repositions the put pointer (
pptr()) by count characters, where count may be positive or negative. No checks are done for moving the pointer outside the put area [pbase(), epptr()).The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
Wenn der Zeiger fortgeschrittenen und dann
overflow() aufgerufen wird, um die Put-Bereich zugehörigen Zeichenfolge spülen, ist der Effekt, dass zusätzliche count Zeichen mit undefinierten Werten ausgegeben werden .Original:
If the pointer is advanced and then
overflow() is called to flush the put area to the associated character sequence, the effect is that extra count characters with undefined values are output.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
Inhaltsverzeichnis |
[Bearbeiten]Parameter
| count | - | Zahl der Put-Zeiger hinzuzufügen Original: number to add to the put pointer The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
[Bearbeiten]Rückgabewert
(None)
Original:
(none)
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
[Bearbeiten]Beispiel
#include <iostream>#include <string>#include <fstream> struct showput_streambuf :std::filebuf{using std::filebuf::pbump;// expose protectedstd::string showput()const{returnstd::string(pbase(), pptr());}}; int main(){ showput_streambuf mybuf; mybuf.open("test.txt", std::ios_base::out);std::ostream str(&mybuf); str <<"This is a test"<<std::flush<<"1234";std::cout<<"The put area contains: "<< mybuf.showput()<<'\n'; mybuf.pbump(10);std::cout<<"after pbump(10), it contains "<< mybuf.showput()<<'\n';}
Output:
The put area contains: 1234 after pbump(10), it contains 1234 is a test
[Bearbeiten]Siehe auch
Fortschritte der nächste Zeiger in der Eingabesequenz Original: advances the next pointer in the input sequence The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (geschützt Member-Funktion) | |
