title: How to convert the Char * to hexadecimal value
body: <p>I have a char array that i need to convert to hexadecimal value   </p>
  
  <pre><code>char* arrrr =[self mountLVparams:NULL :c :code_ward_arr];  
  
  int size =strlen(arrrr);
  </code></pre>
  
  <p>I am trying with this but this not happening </p>
  
  <pre><code> NSData* data = [NSData dataWithBytes:arrrr length:sizeof(sizeof(unsigned char)*size)];
  </code></pre>