Children Sum Parent

/*Complete the function below

struct Node
{
    int data;
    struct Node* left;
    struct Node* right;
    
    Node(int x){
        data = x;
        left = right = NULL;
    }
};
*/

// Return 1 if all the nodes in the tree satisfy the given property. Else return 0

int isSumProperty(Node *node){
    int left_data = 0, right_data = 0; 
    if(node == NULL || (node->left == NULL &&  node->right == NULL)) 
        return 1; 
    else
    { 
        if(node->left != NULL) 
            left_data = node->left->data;
        if(node->right != NULL) 
            right_data = node->right->data; 
        if((node->data == left_data + right_data)&& 
            isSumProperty(node->left) && 
            isSumProperty(node->right)) 
            return 1; 
        else
            return 0; 
    } 
}