title: string datatype in c
body: <p>I am beginner in C,
  I am trying to write a function to return a string.
  I know that in C we don't have string data type. instead of these I try to use an array of chars but It's not my solution.</p>
  
  <pre><code>char[] my_function(int x){
      if(x&gt;0)
          return 'greaterThanZero';
      else
          return 'smallerOrEqualOfZero';
  }
  </code></pre>
  
  <p>please help me.</p>