title: Finding length of char array
body: <p>I have some code as follows:</p>
  
  <pre><code>int i=0;
  char a[7]={0x00,0xdc,0x01,0x04};
  int len=0;
  len = sizeof(a);
  printf("The Length is : %d", len);
  </code></pre>
  
  <p>Here I want to find the length of the array <code>a</code> in c?
  How can this be done?</p>