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<html><head><meta http-equiv="X-UA-Compatible" content="IE=edge" /><link rel="shortcut icon" href="../icons/favicon.ico" /><link rel="stylesheet" type="text/css" href="../styles/branding.css" /><link rel="stylesheet" type="text/css" href="../styles/branding-en-US.css" /><script type="text/javascript" src="../scripts/branding.js"> </script><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>gmp_lib.gmp_vsscanf Method </title><meta name="Language" content="en-us" /><meta name="System.Keywords" content="gmp_vsscanf method" /><meta name="System.Keywords" content="gmp_lib.gmp_vsscanf method" /><meta name="Microsoft.Help.F1" content="Math.Gmp.Native.gmp_lib.gmp_vsscanf" /><meta name="Microsoft.Help.Id" content="M:Math.Gmp.Native.gmp_lib.gmp_vsscanf(System.String,System.String,System.Object[])" /><meta name="Description" content="Read from a null-terminated string ." /><meta name="Microsoft.Help.ContentType" content="Reference" /><meta name="BrandingAware" content="true" /><meta name="container" content="Math.Gmp.Native" /><meta name="file" content="1a966758-12dc-4da3-cb22-b3b3d788ba02" /><meta name="guid" content="1a966758-12dc-4da3-cb22-b3b3d788ba02" /><link type="text/css" rel="stylesheet" href="../styles/highlight.css" /><script type="text/javascript" src="../scripts/highlight.js"> </script><link rel="stylesheet" type="text/css" href="../styles/branding-Website.css" /><script type="text/javascript" src="../scripts/jquery-1.11.0.min.js"></script><script type="text/javascript" src="../scripts/branding-Website.js"></script><script type="text/javascript" src="../scripts/clipboard.min.js"></script></head><body onload="OnLoad('cs')"><input type="hidden" id="userDataCache" class="userDataStyle" /><div class="pageHeader" id="PageHeader">GMP Native Interface for .NET<form id="SearchForm" method="get" action="#" onsubmit="javascript:TransferToSearchPage(); return false;"><input id="SearchTextBox" type="text" maxlength="200" /><button id="SearchButton" type="submit"></button></form></div><div class="pageBody"><div class="leftNav" id="leftNav"><div id="tocNav"><div class="toclevel0" data-toclevel="0"><a class="tocCollapsed" onclick="javascript: Toggle(this);" href="#!" /><a data-tochassubtree="true" href="846f5c8a-6cba-433e-9f18-cde2ff5695cd.htm" title="GMP Native Interface for .NET" tocid="roottoc">GMP Native Interface for .NET</a></div><div class="toclevel0" data-toclevel="0"><a class="tocCollapsed" onclick="javascript: Toggle(this);" href="#!" /><a data-tochassubtree="true" href="d9c51b9f-0c54-770b-28ea-6eebd8fef368.htm" title="Math.Gmp.Native" tocid="d9c51b9f-0c54-770b-28ea-6eebd8fef368">Math.Gmp.Native</a></div><div class="toclevel0" data-toclevel="0"><a class="tocCollapsed" onclick="javascript: Toggle(this);" href="#!" /><a data-tochassubtree="true" href="3af6b34c-3242-2b75-e7c7-ab79af8a4b0f.htm" title="gmp_lib Class" tocid="3af6b34c-3242-2b75-e7c7-ab79af8a4b0f">gmp_lib Class</a></div><div class="toclevel1" data-toclevel="1" data-childrenloaded="true"><a class="tocExpanded" onclick="javascript: Toggle(this);" href="#!" /><a data-tochassubtree="true" href="0fa7cbf3-e8f4-6b14-d829-8aa663e77c74.htm" title="gmp_lib Methods" tocid="0fa7cbf3-e8f4-6b14-d829-8aa663e77c74">gmp_lib Methods</a></div><div class="toclevel2" data-toclevel="2"><a data-tochassubtree="false" href="c9cb6a67-59b8-5c03-f31d-f252441c53f6.htm" title="_mpz_realloc Method " tocid="c9cb6a67-59b8-5c03-f31d-f252441c53f6">_mpz_realloc Method </a></div><div class="toclevel2" data-toclevel="2"><a data-tochassubtree="false" href="2c68671c-cd5c-e2ec-52a2-65b0ca31c3d1.htm" title="allocate Method " tocid="2c68671c-cd5c-e2ec-52a2-65b0ca31c3d1">allocate Method </a></div><div class="toclevel2" data-toclevel="2"><a class="tocCollapsed" onclick="javascript: Toggle(this);" href="#!" /><a data-tochassubtree="true" href="92160da3-b1af-e005-cb05-e3fb4dd524d8.htm" title="free Method " tocid="92160da3-b1af-e005-cb05-e3fb4dd524d8">free Method </a></div><div class="toclevel2" data-toclevel="2"><a data-tochassubtree="false" href="fe6e46c3-8464-a080-b5fc-718589320cd5
2017-11-04 16:02:37 +01:00
Read from a null-terminated string <span class="parameter">s</span>.
</div><p> </p>
<strong>Namespace:</strong>
 <a href="d9c51b9f-0c54-770b-28ea-6eebd8fef368.htm">Math.Gmp.Native</a><br />
<strong>Assembly:</strong>
 Math.Gmp.Native (in Math.Gmp.Native.dll) Version: 1.0.0.0 (1.0.0.0)<div class="collapsibleAreaRegion"><span class="collapsibleRegionTitle" onclick="SectionExpandCollapse('ID1RB')" onkeypress="SectionExpandCollapse_CheckKey('ID1RB', event)" tabindex="0"><img id="ID1RBToggle" class="collapseToggle" src="../icons/SectionExpanded.png" />Syntax</span></div><div id="ID1RBSection" class="collapsibleSection"><div class="codeSnippetContainer"><div class="codeSnippetContainerTabs"><div id="ID0EDCA_tab1" class="codeSnippetContainerTab"><a href="#" onclick="javascript:ChangeTab('ID0EDCA','cs','1','4');return false;">C#</a></div><div id="ID0EDCA_tab2" class="codeSnippetContainerTab"><a href="#" onclick="javascript:ChangeTab('ID0EDCA','vb','2','4');return false;">VB</a></div><div id="ID0EDCA_tab3" class="codeSnippetContainerTab"><a href="#" onclick="javascript:ChangeTab('ID0EDCA','cpp','3','4');return false;">C++</a></div><div id="ID0EDCA_tab4" class="codeSnippetContainerTab"><a href="#" onclick="javascript:ChangeTab('ID0EDCA','fs','4','4');return false;">F#</a></div></div><div class="codeSnippetContainerCodeContainer"><div class="codeSnippetToolBar"><div class="codeSnippetToolBarText"><a id="ID0EDCA_copyCode" href="#" class="copyCodeSnippet" onclick="javascript:CopyToClipboard('ID0EDCA');return false;" title="Copy">Copy</a></div></div><div id="ID0EDCA_code_Div1" class="codeSnippetContainerCode" style="display: block"><pre xml:space="preserve"><span class="keyword">public</span> <span class="keyword">static</span> <span class="identifier">int</span> <span class="identifier">gmp_vsscanf</span>(
<span class="identifier">string</span> <span class="parameter">s</span>,
<span class="identifier">string</span> <span class="parameter">fmt</span>,
<span class="keyword">params</span> <span class="identifier">Object</span>[] <span class="parameter">ap</span>
)</pre></div><div id="ID0EDCA_code_Div2" class="codeSnippetContainerCode" style="display: none"><pre xml:space="preserve"><span class="keyword">Public</span> <span class="keyword">Shared</span> <span class="keyword">Function</span> <span class="identifier">gmp_vsscanf</span> (
<span class="parameter">s</span> <span class="keyword">As</span> <span class="identifier">String</span>,
<span class="parameter">fmt</span> <span class="keyword">As</span> <span class="identifier">String</span>,
<span class="keyword">ParamArray</span> <span class="parameter">ap</span> <span class="keyword">As</span> <span class="identifier">Object</span>()
) <span class="keyword">As</span> <span class="identifier">Integer</span></pre></div><div id="ID0EDCA_code_Div3" class="codeSnippetContainerCode" style="display: none"><pre xml:space="preserve"><span class="keyword">public</span>:
<span class="keyword">static</span> <span class="identifier">int</span> <span class="identifier">gmp_vsscanf</span>(
<span class="identifier">String</span>^ <span class="parameter">s</span>,
<span class="identifier">String</span>^ <span class="parameter">fmt</span>,
... <span class="keyword">array</span>&lt;<span class="identifier">Object</span>^&gt;^ <span class="parameter">ap</span>
)</pre></div><div id="ID0EDCA_code_Div4" class="codeSnippetContainerCode" style="display: none"><pre xml:space="preserve"><span class="keyword">static</span> <span class="keyword">member</span> <span class="identifier">gmp_vsscanf</span> :
<span class="parameter">s</span> : <span class="identifier">string</span> *
<span class="parameter">fmt</span> : <span class="identifier">string</span> *
<span class="parameter">ap</span> : <span class="identifier">Object</span>[] <span class="keyword">-&gt;</span> <span class="identifier">int</span>
</pre></div></div></div><script type="text/javascript">AddLanguageTabSet("ID0EDCA");</script><h4 class="subHeading">Parameters</h4><dl><dt><span class="parameter">s</span></dt><dd>Type: <a href="http://msdn2.microsoft.com/en-us/library/s1wwdcbf" target="_blank">System<span id="LST30171EB7_1"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST30171EB7_1?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>String</a><br />A string.</dd><dt><span class="parameter">fmt</span></dt><dd>Type: <a href="http://msdn2.microsoft.com/en-us/library/s1wwdcbf" target="_blank">System<span id="LST30171EB7_2"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST30171EB7_2?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>String</a><br />Format string. See <a href="https://gmplib.org/manual/Formatted-Input-Strings.html#Formatted-Input-Strings">Formatted Input Strings</a>.</dd><dt><span class="parameter">ap</span></dt><dd>Type: <span id="LST30171EB7_3"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST30171EB7_3?cpp=array&lt;");</script><a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">System<span id="LST30171EB7_4"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST30171EB7_4?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>Object</a><span id="LST30171EB7_5"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST30171EB7_5?cpp=&gt;|vb=()|nu=[]");</script><br />Arguments.</dd></dl><h4 class="subHeading">Return Value</h4>Type: <a href="http://msdn2.microsoft.com/en-us/library/td2s409d" target="_blank">Int32</a><br />The return value the number of fields successfully parsed and stored. %n fields and fields read but suppressed by * dont count towards the return value.</div><div class="collapsibleAreaRegion"><span class="collapsibleRegionTitle" onclick="SectionExpandCollapse('ID2RB')" onkeypress="SectionExpandCollapse_CheckKey('ID2RB', event)" tabindex="0"><img id="ID2RBToggle" class="collapseToggle" src="../icons/SectionExpanded.png" />Examples</span></div><div id="ID2RBSection" class="collapsibleSection"><div class="codeSnippetContainer"><div class="codeSnippetContainerTabs"><div id="ID0EDAABA_tab1" class="codeSnippetContainerTab"><a href="#" onclick="javascript:ChangeTab('ID0EDAABA','cs','1','4');return false;">C#</a></div><div id="ID0EDAABA_tab2" class="codeSnippetContainerTab"><a href="#" onclick="javascript:ChangeTab('ID0EDAABA','vb','2','4');return false;">VB</a></div><div id="ID0EDAABA_tab3" class="codeSnippetContainerTabPhantom"><a href="#" onclick="javascript:ChangeTab('ID0EDAABA','cpp','3','4');return false;">C++</a></div><div id="ID0EDAABA_tab4" class="codeSnippetContainerTabPhantom"><a href="#" onclick="javascript:ChangeTab('ID0EDAABA','fs','4','4');return false;">F#</a></div></div><div class="codeSnippetContainerCodeContainer"><div class="codeSnippetToolBar"><div class="codeSnippetToolBarText"><a id="ID0EDAABA_copyCode" href="#" class="copyCodeSnippet" onclick="javascript:CopyToClipboard('ID0EDAABA');return false;" title="Copy">Copy</a></div></div><div id="ID0EDAABA_code_Div1" class="codeSnippetContainerCode" style="display: block"><pre xml:space="preserve">mpz_t z = <span class="highlight-literal">"0"</span>;
mpq_t q = <span class="highlight-literal">"0"</span>;
mpf_t f = <span class="highlight-literal">"0"</span>;
ptr&lt;Char&gt; c = <span class="highlight-keyword">new</span> ptr&lt;Char&gt;(<span class="highlight-literal">'0'</span>);
ptr&lt;mp_size_t&gt; zt = <span class="highlight-keyword">new</span> ptr&lt;mp_size_t&gt;(<span class="highlight-number">0</span>);
ptr&lt;Double&gt; dbl = <span class="highlight-keyword">new</span> ptr&lt;Double&gt;(<span class="highlight-number">0</span>);
Assert.IsTrue(gmp_lib.gmp_vsscanf(<span class="highlight-literal">"123456 7B/1C8 1.234500e+10 A 10 1.000000"</span>, <span class="highlight-literal">"%Zd %QX %Fe %hhc %d %lf"</span>, z, q, f, c, zt, dbl) == <span class="highlight-number">6</span>);
Assert.IsTrue(z.ToString() == <span class="highlight-literal">"123456"</span>);
Assert.IsTrue(q.ToString() == <span class="highlight-literal">"123/456"</span>);
Assert.IsTrue(f.ToString() == <span class="highlight-literal">"0.12345e11"</span>);
Assert.IsTrue(c.Value == <span class="highlight-literal">'A'</span>);
Assert.IsTrue(zt.Value == <span class="highlight-number">10</span>);
Assert.IsTrue(dbl.Value == <span class="highlight-number">1.0</span>);
<span class="highlight-comment">// Release unmanaged memory.</span>
gmp_lib.mpz_clear(z);
gmp_lib.mpq_clear(q);
gmp_lib.mpf_clear(f);</pre></div><div id="ID0EDAABA_code_Div2" class="codeSnippetContainerCode" style="display: none"><pre xml:space="preserve"><span class="highlight-keyword">Dim</span> z <span class="highlight-keyword">As</span> mpz_t = <span class="highlight-literal">"0"</span>
<span class="highlight-keyword">Dim</span> q <span class="highlight-keyword">As</span> mpq_t = <span class="highlight-literal">"0"</span>
<span class="highlight-keyword">Dim</span> f <span class="highlight-keyword">As</span> mpf_t = <span class="highlight-literal">"0"</span>
<span class="highlight-keyword">Dim</span> c <span class="highlight-keyword">As</span> <span class="highlight-keyword">New</span> ptr(<span class="highlight-keyword">Of</span>[<span class="highlight-keyword">Char</span>])(<span class="highlight-literal">"0"</span>C)
<span class="highlight-keyword">Dim</span> zt <span class="highlight-keyword">As</span> <span class="highlight-keyword">New</span> ptr(<span class="highlight-keyword">Of</span> mp_size_t)(<span class="highlight-number">0</span>)
<span class="highlight-keyword">Dim</span> dbl <span class="highlight-keyword">As</span> <span class="highlight-keyword">New</span> ptr(<span class="highlight-keyword">Of</span>[<span class="highlight-keyword">Double</span>])(<span class="highlight-number">0</span>)
Assert.IsTrue(gmp_lib.gmp_vsscanf(<span class="highlight-literal">"123456 7B/1C8 1.234500e+10 A 10 1.000000"</span>, <span class="highlight-literal">"%Zd %QX %Fe %hhc %d %lf"</span>, z, q, f, c, zt, dbl) = <span class="highlight-number">6</span>)
Assert.IsTrue(z.ToString() = <span class="highlight-literal">"123456"</span>)
Assert.IsTrue(q.ToString() = <span class="highlight-literal">"123/456"</span>)
Assert.IsTrue(f.ToString() = <span class="highlight-literal">"0.12345e11"</span>)
Assert.IsTrue(c.Value = <span class="highlight-literal">"A"</span>C)
Assert.IsTrue(zt.Value = <span class="highlight-number">10</span>)
Assert.IsTrue(dbl.Value = <span class="highlight-number">1.0</span>)
<span class="highlight-comment">' Release unmanaged memory.</span>
gmp_lib.mpz_clear(z)
gmp_lib.mpq_clear(q)
2018-01-06 17:23:30 +01:00
gmp_lib.mpf_clear(f)</pre></div><div id="ID0EDAABA_code_Div3" class="codeSnippetContainerCode" style="display: none"><p>No code example is currently available or this language may not be supported.</p></div><div id="ID0EDAABA_code_Div4" class="codeSnippetContainerCode" style="display: none"><p>No code example is currently available or this language may not be supported.</p></div></div></div><script type="text/javascript">AddLanguageTabSet("ID0EDAABA");</script></div><div class="collapsibleAreaRegion" id="seeAlsoSection"><span class="collapsibleRegionTitle" onclick="SectionExpandCollapse('ID3RB')" onkeypress="SectionExpandCollapse_CheckKey('ID3RB', event)" tabindex="0"><img id="ID3RBToggle" class="collapseToggle" src="../icons/SectionExpanded.png" />See Also</span></div><div id="ID3RBSection" class="collapsibleSection"><h4 class="subHeading">Reference</h4><div class="seeAlsoStyle"><a href="3af6b34c-3242-2b75-e7c7-ab79af8a4b0f.htm">gmp_lib Class</a></div><div class="seeAlsoStyle"><a href="d9c51b9f-0c54-770b-28ea-6eebd8fef368.htm">Math.Gmp.Native Namespace</a></div><div class="seeAlsoStyle"><a href="279d21b9-bd04-522e-0759-d1add6fe6fae.htm">gmp_sscanf</a></div><div class="seeAlsoStyle"><a href="316be139-2970-161f-ba7c-730f067b5cf3.htm">gmp_vfscanf</a></div><div class="seeAlsoStyle"><a href="e5060da5-cafd-67e7-f18f-3a9d3c2aba7d.htm">gmp_vscanf</a></div><div class="seeAlsoStyle"><a href="3af6b34c-3242-2b75-e7c7-ab79af8a4b0f.htm"><a href="/Math.Gmp.Native/html/3af6b34c-3242-2b75-e7c7-ab79af8a4b0f.htm#Formatted_Input_Functions">Formatted Input Functions</a></a></div><div class="seeAlsoStyle"><a href="3af6b34c-3242-2b75-e7c7-ab79af8a4b0f.htm"><a href="https://gmplib.org/manual/Formatted-Input-Functions.html#Formatted-Input-Functions">GNU MP - Formatted Input Functions</a></a></div><div class="seeAlsoStyle"><a href="3af6b34c-3242-2b75-e7c7-ab79af8a4b0f.htm"><a href="https://gmplib.org/manual/Formatted-Input-Strings.html#Formatted-Input-Strings">GNU MP - Formatted Input Strings</a></a></div></div></div></div><div id="pageFooter" class="pageFooter"> </div></body></html>