https://wiki.shelek.ru/index.php?action=history&feed=atom&title=FAQ%3AANSI_CPP%3A%D0%B7%D0%B0%D0%B4%D0%B0%D1%82%D1%8C_%D1%87%D0%B8%D1%81%D0%BB%D0%BE_%D0%B7%D0%BD%D0%B0%D0%BA%D0%BE%D0%B2_%D0%BF%D0%BE%D1%81%D0%BB%D0%B5_%D0%B7%D0%B0%D0%BF%D1%8F%D1%82%D0%BE%D0%B9 FAQ:ANSI CPP:задать число знаков после запятой - История изменений 2026-05-26T23:55:35Z История изменений этой страницы в вики MediaWiki 1.25.1 https://wiki.shelek.ru/index.php?title=FAQ:ANSI_CPP:%D0%B7%D0%B0%D0%B4%D0%B0%D1%82%D1%8C_%D1%87%D0%B8%D1%81%D0%BB%D0%BE_%D0%B7%D0%BD%D0%B0%D0%BA%D0%BE%D0%B2_%D0%BF%D0%BE%D1%81%D0%BB%D0%B5_%D0%B7%D0%B0%D0%BF%D1%8F%D1%82%D0%BE%D0%B9&diff=275&oldid=prev RXL: /* Как задать число знаков после запятой у float при преобразовании в строку? */ 2008-07-29T21:49:58Z <p>‎<span dir="auto"><span class="autocomment">Как задать число знаков после запятой у float при преобразовании в строку?</span></span></p> <table class='diff diff-contentalign-left'> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr style='vertical-align: top;'> <td colspan='2' style="background-color: white; color:black; text-align: center;">← Предыдущая</td> <td colspan='2' style="background-color: white; color:black; text-align: center;">Версия 21:49, 29 июля 2008</td> </tr><tr><td colspan="2" class="diff-lineno" id="L2" >Строка 2:</td> <td colspan="2" class="diff-lineno">Строка 2:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Примеры для разных случаев:</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Примеры для разных случаев:</div></td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>&lt;<del class="diffchange diffchange-inline">pre</del>&gt;</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>&lt;<ins class="diffchange diffchange-inline">syntaxhighlight lang=&quot;cpp&quot;</ins>&gt;</div></td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline"> </del>char sDouble[128]</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>char sDouble[128]</div></td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline"> </del>float d1 = 0.001778;</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>float d1 = 0.001778;</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline"> </del>printf(sDouble, &quot;%.4f&quot;, d1); // 4 знака после запятой</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>printf(sDouble, &quot;%.4f&quot;, d1); // 4 знака после запятой</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline"> </del>printf(&quot;%.4f&quot;, d1); // 4 знака после запятой</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>printf(&quot;%.4f&quot;, d1); // 4 знака после запятой</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline"> </del>cout&lt;&lt;setiosflags(ios::fixed) &lt;&lt; setprecision(4) &lt;&lt; d1; // 4 знака после запятой</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>cout&lt;&lt;setiosflags(ios::fixed) &lt;&lt; setprecision(4) &lt;&lt; d1; // 4 знака после запятой</div></td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>&lt;/<del class="diffchange diffchange-inline">pre</del>&gt;</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>&lt;/<ins class="diffchange diffchange-inline">syntaxhighlight</ins>&gt;</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[Category:FAQ:ANSI CPP]]</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[Category:FAQ:ANSI CPP]]</div></td></tr> </table> RXL https://wiki.shelek.ru/index.php?title=FAQ:ANSI_CPP:%D0%B7%D0%B0%D0%B4%D0%B0%D1%82%D1%8C_%D1%87%D0%B8%D1%81%D0%BB%D0%BE_%D0%B7%D0%BD%D0%B0%D0%BA%D0%BE%D0%B2_%D0%BF%D0%BE%D1%81%D0%BB%D0%B5_%D0%B7%D0%B0%D0%BF%D1%8F%D1%82%D0%BE%D0%B9&diff=169&oldid=prev RXL: Ветвление FAQ:ANSI CPP 2008-07-28T18:28:21Z <p>Ветвление FAQ:ANSI CPP</p> <p><b>Новая страница</b></p><div>===Как задать число знаков после запятой у float при преобразовании в строку?===<br /> <br /> Примеры для разных случаев:<br /> &lt;pre&gt;<br /> char sDouble[128]<br /> float d1 = 0.001778;<br /> <br /> printf(sDouble, &quot;%.4f&quot;, d1); // 4 знака после запятой<br /> <br /> printf(&quot;%.4f&quot;, d1); // 4 знака после запятой<br /> <br /> cout&lt;&lt;setiosflags(ios::fixed) &lt;&lt; setprecision(4) &lt;&lt; d1; // 4 знака после запятой<br /> &lt;/pre&gt;<br /> <br /> [[Category:FAQ:ANSI CPP]]</div> RXL