How to hide prices and add to cart function to unlogged users WooCommerce

Hi there, i was reading about this en the forum but i do not find a solution to my problem. I want to hide the prices and the add to cart button to people that does not logged in. In some post they explain how to hide prices but not how to hide the cart. I tried to do like it says in this https://www.ads-software.com/support/topic/hide-prices?replies=27 post but that code does not hide the cart. And also it says that i have to put the code in mypage/public_html/wp-content/plugins/woocommerce/includes/wc-template-functions.php but doesn`t work.

Can any one hel me?

Thanks