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<h3 class="section">6.63 Binary Constants using the ‘<samp><span class="samp">0b</span></samp>’ Prefix</h3>
<p><a name="index-Binary-constants-using-the-_0040samp_007b0b_007d-prefix-4196"></a>
Integer constants can be written as binary constants, consisting of a
sequence of ‘<samp><span class="samp">0</span></samp>’ and ‘<samp><span class="samp">1</span></samp>’ digits, prefixed by ‘<samp><span class="samp">0b</span></samp>’ or
‘<samp><span class="samp">0B</span></samp>’. This is particularly useful in environments that operate a
lot on the bit level (like microcontrollers).
<p>The following statements are identical:
<pre class="smallexample"> i = 42;
i = 0x2a;
i = 052;
i = 0b101010;
</pre>
<p>The type of these constants follows the same rules as for octal or
hexadecimal integer constants, so suffixes like ‘<samp><span class="samp">L</span></samp>’ or ‘<samp><span class="samp">UL</span></samp>’
can be applied.
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