binary search trees
 

i have a code of binary trees with user input student id, coursework mark, exam mark..
in my trees... wat if i need to write a function to count out the final marks of coursework mark 60% and exam mark 40 %.. total up given a grade.. user need to key in a grade then the function will search there grade in the rage n print it out???
example.. grade a 80-100 grade B 60-79