std::mbsinit
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int mbsinit( const std::mbstate_t* ps); |
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Si
ps n'est pas un pointeur NULL, la fonction mbsinit dtermine si l'objet point std::mbstate_t dcrit l'tat de conversion initial . Original:
If
ps is not a null pointer, the mbsinit function determines whether the pointed-to std::mbstate_t object describes the initial conversion state. The text has been machine-translated via Google Translate.
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Notes
Bien qu'un initialis zro std::mbstate_t reprsente toujours l'tat de conversion initial, il peut y avoir d'autres valeurs de std::mbstate_t qui reprsentent galement l'tat de conversion initial .
Original:
Although a zero-initialized std::mbstate_t always represents the initial conversion state, there may be other values of std::mbstate_t that also represent the initial conversion state.
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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Paramtres
| ps | - | pointeur vers l'objet std :: mbstate_t examiner
Original: pointer to the std::mbstate_t object to examine The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
Retourne la valeur
0 si ps n'est pas un pointeur NULL et ne reporesent l'tat initial de conversion, valeur diffrente de zro autrement .Original:
0 if ps is not a null pointer and does not reporesent the initial conversion state, nonzero value otherwise.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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Exemple
#include <clocale>
#include <string>
#include <iostream>
#include <cwchar>
int main()
{
// allow mbrlen() to work with UTF-8 multibyte encoding
std::setlocale(LC_ALL, "en_US.utf8");
// UTF-8 narrow multibyte encoding
std::string str = u8""; // or u8"\u6c34" or "\xe6\xb0\xb4"
std::mbstate_t mb = std::mbstate_t();
(void)std::mbrlen(&str[0], 1, &mb);
if (!std::mbsinit(&mb)) {
std::cout << "After processing the first 1 byte of " << str
<< " the conversion state is not initial\n";
}
(void)std::mbrlen(&str[1], str.size()-1, &mb);
if (std::mbsinit(&mb)) {
std::cout << "After processing the remaining 2 bytes of " << str
<< ", the conversion state is initial conversion state\n";
}
}
Rsultat :
After processing the first 1 byte of the conversion state is not initial
After processing the remaining 2 bytes of , the conversion state is initial conversion state
Voir aussi
informations sur l'tat de conversion ncessaire pour parcourir les chanes de caractres multi-octets Original: conversion state information necessary to iterate multibyte character strings The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (classe) | |
C documentation for mbsinit
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