c - Passing global pointer to function -

i declare global struct word *root = null; populate using pthread calls(created bst) , when go print out inorder traversal function calling inorder(word *root), gives me error saying "unexpected type name 'word': expected expression". don't understand doing wrong.

void ordered(word *root); // declaring function //code// word *root = null; // declare global pointer root  /*main*/ //code work , creates bst root  ordered(word *root); //call function 

follow these rules:

• you must specify variable type when declare function
• you may specify variable name when declare function
• you must not specify variable type when call function

in example, variable type word* , variable name root.

so change this:

ordered(word *root); //call function 

to this:

ordered(root); //call function