How create simple tree ?

how can i create simple tree ,, like in C language i create struct than what have in the node and how much his children and after I fill my tree

i can do it in Matlab? and how ?

and why when i use t = tree('I am the root node') , i read =>

Number of names in string

'I am the root node'

is not equal to number of branches of tree

what i did write is like this site => Creating, modifying and accessing a tree, Matlab

what is my fault :( !! please help i need to create tree