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#include <iostream>
 
struct Nodo
{
    int value;
    Nodo* left, *right;
};
 
void Insert(Nodo *root, int x){
    if(root == NULL){
        Nodo *n = new Nodo();
        n->value = x;
        root = n;
        return;
    }
    else{
        if(root->value > x)
            Insert(&(root)->left, x);
        else
            Insert(&(root)->right, x);
    }
}
 
int main()
{
    Nodo *root = NULL;
    Insert(root, 1);
}

prog.cpp: In function 'void Insert(Nodo*, int)':
prog.cpp:18:36: error: cannot convert 'Nodo**' to 'Nodo*' for argument '1' to 'void Insert(Nodo*, int)'
             Insert(&(root)->left, x);
                                    ^
prog.cpp:20:37: error: cannot convert 'Nodo**' to 'Nodo*' for argument '1' to 'void Insert(Nodo*, int)'
             Insert(&(root)->right, x);
                                     ^

Standard output is empty