<pre><code>#include &lt;stdio.h&gt;
int main() {
    unsigned long long int num = 285212672; //FYI: fits in 29 bits
    int normalInt = 5;
    printf("My number is %d bytes wide and its value is %ul. A normal number is %d.\n", sizeof(num), num, normalInt);
    return 0;
}
</code></pre>

<p>Output:</p>

<pre><code>My number is 8 bytes wide and its value is 285212672l. A normal number is 0.
</code></pre>

<p>I assume this unexpected result is from printing the <code>unsigned long long int</code>. How do you <code>printf()</code> an <code>unsigned long long int</code>?</p>

Use the ll (el-el) long-long modifier with the u (unsigned) conversion. (Works in windows, GNU).
```
```
printf("%llu", 285212672);
```
```