class Solution {

public:

```
bool hasPathSum(TreeNode* root, int sum) {
if(root == NULL ){
return false;
}
if(sum == root->val && root->left== NULL && root->right == NULL){
return true;
}
return hasPathSum(root->left, sum - root->val) || hasPathSum(root->right, sum - root->val);
}
```

};