Check out example codes for "command line coursera". It will help you in understanding the concepts better.

Code Example 1

//Binary Search Tree (BST): Function to search a value
bool BST_SearchTree(int Key){
    int  ValueInTree = false;
    TreeNode *temp;
    temp = root;
    while((temp != NULL) && (temp->Key != Key))
        if(Key < temp->Key)
            temp = temp->left; 
            temp = temp->right;
    if(temp == NULL) 
		cout<< "NOT FOUND";
        cout<< "FOUND";

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