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- <h1 id="firstHeading" class="firstHeading">mbsinit</h1> <table class="t-dcl-begin"> <tr class="t-dsc-header"> <th> Defined in header <code>&lt;wchar.h&gt;</code> </th> <th> </th> <th> </th> </tr> <tr class="t-dcl"> <td> <pre data-language="c">int mbsinit( const mbstate_t* ps);</pre>
-</td> <td class="t-dcl-nopad"> </td> <td> <span class="t-mark-rev t-since-c95">(since C95)</span> </td> </tr> </table> <p>If <code>ps</code> is not a null pointer, the <code>mbsinit</code> function determines whether the pointed-to <code><a href="mbstate_t" title="c/string/multibyte/mbstate t">mbstate_t</a></code> object describes the initial conversion state.</p>
-<h3 id="Notes"> Notes</h3> <p>Although a zero-initialized <code><a href="mbstate_t" title="c/string/multibyte/mbstate t">mbstate_t</a></code> always represents the initial conversion state, there may be other values of <code><a href="mbstate_t" title="c/string/multibyte/mbstate t">mbstate_t</a></code> that also represent the initial conversion state.</p>
-<h3 id="Parameters"> Parameters</h3> <table class="t-par-begin"> <tr class="t-par"> <td> ps </td> <td> - </td> <td> pointer to the mbstate_t object to examine </td>
-</tr>
-</table> <h3 id="Return_value"> Return value</h3> <p><code>​0​</code> if <code>ps</code> is not a null pointer and does not represent the initial conversion state, nonzero value otherwise.</p>
-<h3 id="Example"> Example</h3> <div class="t-example"> <div class="c source-c"><pre data-language="c">#include &lt;locale.h&gt;
-#include &lt;string.h&gt;
-#include &lt;stdio.h&gt;
-#include &lt;wchar.h&gt;
-
-int main(void)
-{
- // allow mbrlen() to work with UTF-8 multibyte encoding
- setlocale(LC_ALL, "en_US.utf8");
- // UTF-8 narrow multibyte encoding
- const char* str = u8"水"; // or u8"\u6c34" or "\xe6\xb0\xb4"
- static mbstate_t mb; // zero-initialize
- (void)mbrlen(&amp;str[0], 1, &amp;mb);
- if (!mbsinit(&amp;mb)) {
- printf("After processing the first 1 byte of %s,\n"
- "the conversion state is not initial\n\n", str);
- }
-
- (void)mbrlen(&amp;str[1], strlen(str), &amp;mb);
- if (mbsinit(&amp;mb)) {
- printf("After processing the remaining 2 bytes of %s,\n"
- "the conversion state is initial conversion state\n", str);
- }
-}</pre></div> <p>Output:</p>
-<div class="text source-text"><pre data-language="c">After processing the first 1 byte of 水,
-the conversion state is not initial
-
-After processing the remaining 2 bytes of 水,
-the conversion state is initial conversion state</pre></div> </div> <h3 id="References"> References</h3> <ul>
-<li> C17 standard (ISO/IEC 9899:2018): </li>
-<ul><li> 7.29.6.2.1 The mbsinit function (p: 322) </li></ul>
-<li> C11 standard (ISO/IEC 9899:2011): </li>
-<ul><li> 7.29.6.2.1 The mbsinit function (p: 441-442) </li></ul>
-<li> C99 standard (ISO/IEC 9899:1999): </li>
-<ul><li> 7.24.6.2.1 The mbsinit function (p: 387-388) </li></ul>
-</ul> <h3 id="See_also"> See also</h3> <table class="t-dsc-begin"> <tr class="t-dsc"> <td> <div><a href="mbstate_t" title="c/string/multibyte/mbstate t"> <span class="t-lines"><span>mbstate_t</span></span></a></div>
-<div><span class="t-lines"><span><span class="t-mark-rev t-since-c95">(C95)</span></span></span></div> </td> <td> conversion state information necessary to iterate multibyte character strings <br> <span class="t-mark">(class)</span> </td>
-</tr> <tr class="t-dsc"> <td colspan="2"> <span><a href="https://en.cppreference.com/w/cpp/string/multibyte/mbsinit" title="cpp/string/multibyte/mbsinit">C++ documentation</a></span> for <code>mbsinit</code> </td>
-</tr> </table> <div class="_attribution">
- <p class="_attribution-p">
- &copy; cppreference.com<br>Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.<br>
- <a href="https://en.cppreference.com/w/c/string/multibyte/mbsinit" class="_attribution-link">https://en.cppreference.com/w/c/string/multibyte/mbsinit</a>
- </p>
-</div>