Cacher is the code snippet organizer for pro developers

<?php // This you will find in includes/class-wc-form-handler.php ?>
<div>
<a href="<?php esc_url( get_permalink( wc_get_page_id( 'myaccount' ) ) );  ?>"> Register</a>
</div>

// This function adds a addthis social share button in single product page

add_action('woocommerce_share','wooshare');
function wooshare(){?>
<?php global $xng_add_this_pub; ?>
<?php if(!empty ( $xng_add_this_pub )) : ?>
<div class="product-share">
	<?php _e('<h2>Share this Product</h2>','woo');  ?>
    
	  <script type="text/javascript" src="http://s7.addthis.com/js/300/addthis_widget.js#pubid=<?php echo $xng_add_this_pub; ?>" async="async"></script>

                <ul class="post-sharing addthis_toolbox">
                     <a class="addthis_button_facebook"><i class="fa fa-facebook"></i></a>
                     <a class="addthis_button_twitter"><i class="fa fa-twitter"></i></a>
                     <a class="addthis_button_email"><i class="fa fa-envelope"></i></a>
                     <a class="addthis_button_more"><i class="fa fa-plus"></i></a>
                   </ul>
                   
	</div>
	<div class="clear"></div>
    <?php endif;  ?>
	<?php }

// [Ref:][http://www.remicorson.com/mastering-woocommerce-products-custom-fields/]

/*===================================================================
== FUNCTIONS FOR FREE PRODUCT & TOTAL PRODUCT
====================================================================*/

/****************CUSTOM FIELD FOR CUSTOM GENERAL FIELD**************************************************/

// Add Free Number Custom Field in Woocommerce
//Display Field
add_action( 'woocommerce_product_options_general_product_data', 'woo_add_custom_general_fields' );
// Save Fields
add_action( 'woocommerce_process_product_meta', 'woo_add_custom_general_fields_save' );

function woo_add_custom_general_fields() {

  global $woocommerce, $post;
  
  echo '<div class="options_group">';
  
  woocommerce_wp_text_input( 
	array( 
		'id'                => 'free_offer', 
		'label'             => __( '<strong style="color:#239804">Your Free Products</strong>', 'woocommerce' ), 
		'placeholder'       => '', 
		'description'       => __( 'Please enter a number', 'woocommerce' ),
		'type'              => 'number', 
		'custom_attributes' => array(
				'step' 	=> 'any',
				'min'	=> '0'
			) 
	)
);
  
  woocommerce_wp_text_input( 
	array( 
		'id'          => 'offer_text_field', 
		'label'       => __( '<strong>Your Offer</strong>', 'woocommerce' ), 
		'placeholder' => '',
		'desc_tip'    => 'true',
		'description' => __( 'Enter Your 1st Offer Info.', 'woocommerce' ) 
	)
);

woocommerce_wp_text_input( 
	array( 
		'id'          => 'next_text_field', 
		'label'       => __( '<strong>Your Other Offers</strong>', 'woocommerce' ), 
		'placeholder' => '',
		'desc_tip'    => 'true',
		'description' => __( 'Enter Your 2nd Offer Info.', 'woocommerce' ) 
	)
);

  echo '</div>';
	
}//woo_add_custom_general_fields

function woo_add_custom_general_fields_save( $post_id ){
	//Number Field
	$woocommerce_number_field = $_POST['free_offer'];
	if( !empty( $woocommerce_number_field ) )
		update_post_meta( $post_id, 'free_offer', esc_attr( $woocommerce_number_field ) );
		
	// Text Field
	$woocommerce_text_field = $_POST['offer_text_field'];
	
		update_post_meta( $post_id, 'offer_text_field', esc_attr( $woocommerce_text_field ) );
		
	// Text Field
	$woocommerce_text_field = $_POST['next_text_field'];
	
		update_post_meta( $post_id, 'next_text_field', esc_attr( $woocommerce_text_field ) );
	
	}//woo_add_custom_general_fields_save( $post_id )


/*================================================================
 Function for front-end in cart.php for free products
=================================================================*/

function free_products(){
	
	
	global $woocommerce ,$product, $post;
	

	foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
		 $my_var = $cart_item['product_id'];
		 $free_number = get_post_meta( $my_var, 'free_offer', true );
		 $free_product = $cart_item['quantity'] * $free_number;
		echo apply_filters( 'woocommerce_cart_item_quantity', $free_product, $cart_item_key );
		
		 
		}
	
	
	}
/*================================================================
 Function for front-end in cart.php for Total products
=================================================================*/	
function total_products(){
	global $woocommerce;
	foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
		 $my_var = $cart_item['product_id'];
		 $free_number = get_post_meta( $my_var, 'free_offer', true );
		$item_quantity = $cart_item['quantity'];
		 $free_product = $item_quantity *  $free_number;
		 $total_product = $item_quantity + $free_product;
		echo apply_filters( 'woocommerce_cart_item_quantity', $total_product, $cart_item_key );
		}
	
	
	}