ass="code">c</code>. It means that the string token should end
    just before the next matching <code class="code">c</code> (which is skipped). If no <code class="code">c</code>
    character is encountered, the string token spreads as much as
    possible. For instance, <code class="code"><span class="string">"%s@\t"</span></code> reads a string up to the next
    tab character or to the end of input. If a <code class="code">@</code> character appears
    anywhere else in the format string, it is treated 