Answer :
Pointers are a powerful tool in C programming and can be used to solve complex problems such as this one. The solution for generating and printing a 20x20 grid of arrows and using a pointer to follow the arrows and highlight the path that is taken, as well as a conclusion, is given below.
In C programming, we write code to generate and print a 20x20 grid of arrows (up/down/left/right), which is stored in a 20x20 matrix. The program allows the user to select any point on the boundary of the grid. We use a pointer to "follow the arrows" and highlight the path that is taken. The program will end when there is no place to go, the path leads outside the grid, or the path ends up in the same place twice. The program must substantially use pointers to move along the grid. The 20x20 matrix is generated using nested for loops, and each element in the matrix is assigned an arrow direction based on its position. Then, the user inputs the starting point on the boundary of the grid, and a pointer is initialized to the starting position. The pointer follows the arrows in the matrix, and the path that it takes is highlighted using an asterisk. The program checks if the pointer has reached the boundary of the matrix or has returned to a previously visited point, and if either of these conditions is true, the program terminates. Otherwise, the pointer continues to follow the arrows until it reaches one of these conditions. In this program, we have used pointers to move along the 20x20 grid of arrows, which is stored in a matrix. We have also highlighted the path taken by the pointer using asterisks. The program ends when the pointer has reached the boundary of the matrix, has returned to a previously visited point, or there is no place to go.
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