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using namespace std;

// A Binary Tree node
struct Node
    char data;
    struct Node *left, *right;
    Node(char _data):data(_data),left(NULL),right(NULL){}

void level(Node *root)
   queue<Node*> q;
   int n=0;
         cout<<root->data<<" ";

void swap(char &a, char &b)

void reverse(Node *l, Node *r, int level)
   if(!l || !r)return;

void rev(Node *root)

int main()
    // Level 0
    struct Node *root = new Node('a');

    // Level 1
    root->left = new Node('b');
    root->right = new Node('c');

    // Level 2
    root->left->left = new Node('d');
    root->left->right = new Node('e');
    root->right->left = new Node('f');
    root->right->right = new Node('g');

    // Level 3
    root->left->left->left = new Node('h');
    root->left->left->right = new Node('i');
    root->left->right->left = new Node('j');
    root->left->right->right = new Node('k');
    root->right->left->left = new Node('l');
    root->right->left->right = new Node('m');
    root->right->right->left = new Node('n');
    root->right->right->right = new Node('o');

    // Level 4
    root->left->left->left->left = new Node('a');
    root->left->left->left->right = new Node('b');
    root->left->left->right->left = new Node('c');
    root->left->left->right->right = new Node('d');
    root->left->right->left->left = new Node('e');
    root->left->right->left->right = new Node('f');
    root->left->right->right->left = new Node('g');
    root->left->right->right->right = new Node('h');
    root->right->left->left->left = new Node('i');
    root->right->left->left->right = new Node('j');
    root->right->left->right->left = new Node('k');
    root->right->left->right->right = new Node('l');
    root->right->right->left->left = new Node('m');
    root->right->right->left->right = new Node('n');
    root->right->right->right->left = new Node('o');
    root->right->right->right->right = new Node('p');

    // Level 5
    root->left->left->left->left->left = new Node('a');
    root->left->left->left->left->right = new Node('A');
    root->left->left->left->right->left = new Node('b');
    root->left->left->left->right->right = new Node('B');
    root->left->left->right->left->left = new Node('c');
    root->left->left->right->left->right = new Node('C');
    root->left->left->right->right->left = new Node('d');
    root->left->left->right->right->right = new Node('D');
    root->left->right->left->left->left = new Node('e');
    root->left->right->left->left->right = new Node('E');
    root->left->right->left->right->left = new Node('f');
    root->left->right->left->right->right = new Node('F');
    root->left->right->right->left->left = new Node('g');
    root->left->right->right->left->right = new Node('G');
    root->left->right->right->right->left = new Node('h');
    root->left->right->right->right->right = new Node('H');
    root->right->left->left->left->left = new Node('i');
    root->right->left->left->left->right = new Node('I');
    root->right->left->left->right->left = new Node('j');
    root->right->left->left->right->right = new Node('J');
    root->right->left->right->left->left = new Node('k');
    root->right->left->right->left->right = new Node('k');
    root->right->left->right->right->left = new Node('l');
    root->right->left->right->right->right = new Node('L');
    root->right->right->left->left->left = new Node('m');
    root->right->right->left->left->right = new Node('M');
    root->right->right->left->right->left = new Node('n');
    root->right->right->left->right->right = new Node('N');
    root->right->right->right->left->left = new Node('o');
    root->right->right->right->left->right = new Node('O');
    root->right->right->right->right->left = new Node('p');
    root->right->right->right->right->right = new Node('P');

    cout << "Level Traversal of given tree\n";

    return 0;

… 132 more words
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