title: how to initialize an empty integer array in c++
body: <p>how to put NULL or empty value to an integer array?</p>
  
  <pre><code>struct book{
  char name;
  char aut;
  int det[10];
  };
  book bk[40];
  </code></pre>
  
  <p>here i want every book data type to have there det arrays have value zero for every det[] member.</p>