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    <blockquote> <p>Is it really important to put that semicolon there and if, why?</p> </blockquote> <p>Yes. This can be useful sometime. </p> <p>You can define a struct, and can declare an object as:</p> <pre><code>struct A { //members } obj; </code></pre> <p><code>obj</code> is an object of type <code>A</code>, and you declare this just as shown above. It is in same way you put semicolon after declaring variables, such as:</p> <pre><code>int i; //declares i of type int std::string s; //declares s of type std::string struct {int x,y,z;} point; //declares point of an unnamed struct type </code></pre> <p>Here first two declarations look very familiar, but the last one looks slightly unfamiliar, as it defines an unnamed struct, and simultaneously declares an object called <code>point</code> of the unnamed struct.</p> <p>The bottomline is that you put a semicolon after declaring objects uniformly, no matter how you declare the objects, no matter what their types are.</p> <p>Not only that you can even <code>typedef</code> in a uniform way:</p> <pre><code> typedef int my_int; typedef std::string my_string; typedef struct {int x,y,z;} my_point; </code></pre> <p>Now all of these <code>my_int</code>, <code>my_string</code>, and <code>my_point</code> are types.</p> <p>But when you do neither of them (i.e neither declaring objects, nor defining typedefs), then you simply leave the place as such, blank, with no declaration/definition whatsoever. But the point to be noted is that it gives you an interesting and useful feature all along.</p>
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