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diff --git a/devdocs/c/string%2Fwide%2Fwcscmp.html b/devdocs/c/string%2Fwide%2Fwcscmp.html new file mode 100644 index 00000000..297be2b0 --- /dev/null +++ b/devdocs/c/string%2Fwide%2Fwcscmp.html @@ -0,0 +1,55 @@ + <h1 id="firstHeading" class="firstHeading">wcscmp</h1> <table class="t-dcl-begin"> <tr class="t-dsc-header"> <th> Defined in header <code><wchar.h></code> </th> <th> </th> <th> </th> </tr> <tr class="t-dcl"> <td> <pre data-language="c">int wcscmp( const wchar_t* lhs, const wchar_t* rhs );</pre> +</td> <td class="t-dcl-nopad"> </td> <td> <span class="t-mark-rev t-since-c95">(since C95)</span> </td> </tr> </table> <p>Compares two null-terminated wide strings lexicographically.</p> +<p>The sign of the result is the sign of the difference between the values of the first pair of wide characters that differ in the strings being compared.</p> +<p>The behavior is undefined if <code>lhs</code> or <code>rhs</code> are not pointers to null-terminated wide strings.</p> +<h3 id="Parameters"> Parameters</h3> <table class="t-par-begin"> <tr class="t-par"> <td> lhs, rhs </td> <td> - </td> <td> pointers to the null-terminated wide strings to compare </td> +</tr> +</table> <h3 id="Return_value"> Return value</h3> <p>Negative value if <code>lhs</code> appears before <code>rhs</code> in lexicographical order.</p> +<p>Zero if <code>lhs</code> and <code>rhs</code> compare equal.</p> +<p>Positive value if <code>lhs</code> appears after <code>rhs</code> in lexicographical order.</p> +<h3 id="Notes"> Notes</h3> <p>This function is not locale-sensitive, unlike <code><a href="wcscoll" title="c/string/wide/wcscoll">wcscoll</a></code>, and the order may not be meaningful when characters from different Unicode blocks are used together or when the order of code units does not match any collation order.</p> +<h3 id="Example"> Example</h3> <div class="t-example"> <div class="c source-c"><pre data-language="c">#include <locale.h> +#include <stdio.h> +#include <wchar.h> + +void demo(const wchar_t* lhs, const wchar_t* rhs) +{ + int rc = wcscmp(lhs, rhs); + const char *rel = rc < 0 ? "precedes" : rc > 0 ? "follows" : "equals"; + + setlocale(LC_ALL, "en_US.utf8"); + printf("[%ls] %s [%ls]\n", lhs, rel, rhs); +} + +int main(void) +{ + const wchar_t* string = L"どうもありがとうございます"; + demo(string, L"どうも"); + demo(string, L"助かった"); + demo(string + 9, L"ありがとうございます" + 6); +}</pre></div> <p>Possible output:</p> +<div class="text source-text"><pre data-language="c">[どうもありがとうございます] follows [どうも] +[どうもありがとうございます] precedes [助かった] +[ざいます] equals [ざいます]</pre></div> </div> <h3 id="References"> References</h3> <ul> +<li> C23 standard (ISO/IEC 9899:2023): </li> +<ul><li> 7.29.4.4.1 The wcscmp function (p: TBD) </li></ul> +<li> C17 standard (ISO/IEC 9899:2018): </li> +<ul><li> 7.29.4.4.1 The wcscmp function (p: TBD) </li></ul> +<li> C11 standard (ISO/IEC 9899:2011): </li> +<ul><li> 7.29.4.4.1 The wcscmp function (p: 433) </li></ul> +<li> C99 standard (ISO/IEC 9899:1999): </li> +<ul><li> 7.24.4.4.1 The wcscmp function (p: 379) </li></ul> +</ul> <h3 id="See_also"> See also</h3> <table class="t-dsc-begin"> <tr class="t-dsc"> <td> <div><a href="wcsncmp" title="c/string/wide/wcsncmp"> <span class="t-lines"><span>wcsncmp</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> compares a certain amount of characters from two wide strings <br> <span class="t-mark">(function)</span> </td> +</tr> <tr class="t-dsc"> <td> <div><a href="wmemcmp" title="c/string/wide/wmemcmp"> <span class="t-lines"><span>wmemcmp</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> compares a certain amount of wide characters from two arrays <br> <span class="t-mark">(function)</span> </td> +</tr> <tr class="t-dsc"> <td> <div><a href="../byte/strcmp" title="c/string/byte/strcmp"> <span class="t-lines"><span>strcmp</span></span></a></div> </td> <td> compares two strings <br> <span class="t-mark">(function)</span> </td> +</tr> <tr class="t-dsc"> <td> <div><a href="wcscoll" title="c/string/wide/wcscoll"> <span class="t-lines"><span>wcscoll</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> compares two wide strings in accordance to the current locale <br> <span class="t-mark">(function)</span> </td> +</tr> <tr class="t-dsc"> <td colspan="2"> <span><a href="https://en.cppreference.com/w/cpp/string/wide/wcscmp" title="cpp/string/wide/wcscmp">C++ documentation</a></span> for <code>wcscmp</code> </td> +</tr> </table> <div class="_attribution"> + <p class="_attribution-p"> + © cppreference.com<br>Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.<br> + <a href="https://en.cppreference.com/w/c/string/wide/wcscmp" class="_attribution-link">https://en.cppreference.com/w/c/string/wide/wcscmp</a> + </p> +</div> |