Write a simple C++ program which converts the  static binding to dynamic binding

Write a C++ program that simulates a two-dimensional random walk along a grid that has M by N function parameters.The walker moves in one of four directions. The walker chooses the direction randomly. The walker cannot move off the grid. The function ends when the walker visits every grid position at least once. The function returns a dynamic structure that is an ordered record of the walker's positions over time. The first element of the structure is the walker's first position. The last element is the walker's last position.

Analyze and write a comparison of using C++ pointers and Java reference variables to refer to fixed heap-dynamic variables. Use safety and convenience as the primary considerations in the comparison.

Write a concise English language description of the C/C++ function fflush().