ber">3</span>)
f1(<span class="hljs-number">9.9999</span>)        <span class="hljs-comment">// 10</span>
f1(<span class="hljs-number">1.1111</span>)        <span class="hljs-comment">// 1.11</span>
f1(<span class="hljs-number">1.5555</span>)        <span class="hljs-comment">// 1.56</span>
f1(<span class="hljs-number">10.5555</span>)       <span class="hljs-comment">// 10.6</span>
f1(<span class="hljs-number">100.5555</span>)      <span class="hljs-comment">// 101</span>
f1(<span class="hljs-number">1000.5