/*
 Theme Name:   Woodmart Child
 Description:  Woodmart Child Theme
 Author:       XTemos
 Author URI:   http://xtemos.com
 Template:     woodmart
 Version:      1.0.0
 Text Domain:  woodmart
add_filter( 'woocommerce_quantity_input_args', 'custom_default_quantity', 10, 2 );
function custom_default_quantity( $args, $product ) {
    $args['input_value'] = 0;
    return $args;
}