Problem 3: Write a C++ program for tic tac toe board game of 3x3 matrix. Create a class having member functions and variable of the board size char board[3][3]. Write the algorithm defining steps of your program. (Marks 10) Problem 4: A vector is of type xi + yj +zk. Generate two such vectors of random values of x, y and z between values -9 to 9. Write a C++ program and algorithm having two classes for determining a dot product and cross product of two vectors. Find the angle between the vectors. Write algorithm of your program. Also prove by a member function that the cross product of the two