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// Following is the Binary Tree node structure
/**************
class BinaryTreeNode {
    public : 
    T data;
    BinaryTreeNode<T> *left;
    BinaryTreeNode<T> *right;
 
    BinaryTreeNode(T data) {
        this -> data = data;
        left = NULL;
        right = NULL;
    }
};
***************/
 
int solve(BinaryTreeNode<int>* root, int M){
    // Write your code here
    int level = 0;
	if(root == NULL){
        return 0;
    }
    if(root->data == M ){
     return level+1;
    }
    if(root->left!=NULL){
        solve(root->left, M);
        level++;
    }
    else{
       solve(root->right, M);
       level++;
    }    
//     return level;
 
}
 

prog.cpp:17:11: error: ‘BinaryTreeNode’ was not declared in this scope
 int solve(BinaryTreeNode<int>* root, int M){
           ^~~~~~~~~~~~~~
prog.cpp:17:26: error: expected primary-expression before ‘int’
 int solve(BinaryTreeNode<int>* root, int M){
                          ^~~
prog.cpp:17:38: error: expected primary-expression before ‘int’
 int solve(BinaryTreeNode<int>* root, int M){
                                      ^~~
prog.cpp:17:43: error: expression list treated as compound expression in initializer [-fpermissive]
 int solve(BinaryTreeNode<int>* root, int M){
                                           ^

Standard output is empty