How to take input

#1

plz write the code of build tree.

#2

You can do something like this:

node * buildTree()
{
string d;
cin>>d;
if(d==“false”)
{
return NULL;
}
node * root=new node(stoi(d));
root->left=preorder_input(root->left);
root->right=preorder_input(root->right);
return root;
}

#3

But first we enter integer like 10 true 20 true then how can we compare 10==false?

#4

Yeah…sorry…
do something like this:

node* buildtree(node* root)
{
    int d;
    cin>>d;
    if(!root)
    {
    root=new node(d);}
    string s;
    cin>>s;
    if(s=="true")
    {
        root->left=buildtree(root->left);
    }
    cin>>s;
    if(s=="true"){
        root->right=buildtree(root->right);
    }
    return root;  
}
1 Like
#5

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