PLEASE USE CLANGUAGE 02: (Turtle Graphics) 50 points) The Logo language made the

Question

PLEASE USE CLANGUAGE 02: (Turtle Graphics) 50 points) The Logo language made the concept of turtle graphics famous. Imagine a mechanical turtle that walks around the room under the control of a C program. The turtle holds a pen in one of two positions, up or down. While the pen is down, the turtle traces out shapes as it moves; while the pen is up, the turtle moves about fireely without writing anything. In this problem you'll simulate the operation of the turtle and create a computerized sketchpad as well. Use a s0-by 50 array floor which is initialized to zeros. Read commands from an array that contains them. The commands that can be given to the turtle are ve forward Keep track of the current turtle position at all times and whether the pen is currently up or down. Assume that the turtle always starts at pasition Q, 0 of the floor with its pen up. Suppose that the turtle is somewhere near the center of the floor. The following program would draw and print a 12.by-12 square 5,12 5,12 5,12 5,12 As the turtle moves with the pen down, set the appropriate elements of array floor to 1s. When the 6 command (print) is given, wherever there's a 1 in the array, display an asterisk, or some other character you choose. Wherever there's a zero, display a blank Write a program to mplement the turtle graphics capabilities discussed here. Write several turtle graphics programs to draw interesting shapes. Add ather commands to increase the power of your turtle graphics language. Note: When your programs is reading the commands, store them in an array. To be processed of you perform scant ("Id " . &comand;) as an example, at that command is a 5, you can read the next command with scant,d"command) to parse the comma.

Explanation / Answer

#include<stdio.h>
#include<stdlib.h>
// Defines maximum row and column size
#define MAX 50

// main function definition
int main()
{
// Loop variable
int r, c;
// Declares an matrix
int floor[MAX][MAX];
// To store the commands entered by the user
int command, command1;
// To store the current position
int posx, posy;
// Initializes the current position to zero
posx = posy = 0;
// Initializes the move to zero
int move = 0;
// Loops till number of rows
for(r = 0; r < MAX; r++)
// Loops till number of columns
for(c = 0; c < MAX; c++)
// Initializes each cell to zero
floor[r][c] = 0;
// Loops till user command is not 9
do
{
// Accepts the command from the user
scanf("%d", &command);
// Checks if the command is 5
if(command == 5)
// Accept the number after the comma symbol
scanf(",%d", &command1);
// Otherwise set the move value to command
else
move = command;
// Checks if the command is 5
if(command == 5)
{
// Checks if the move is 1
if(move == 1)
{
// Checks if the position of x coordinate is 0 then cannot move up
// Because x coordinate cannot be negative
if(posx == 0)
{
// Display error message and exit the program
printf("Cannot Move UP");
exit(0);
}// End of if condition
// Otherwise move up
else
{
// Loops from current x coordinate position to current x coordinate position minus command1 value,
// which is number of position to move
for(r = posx; r >= posx-command1; r--)
// Set the floor array row index r and column index position posy to '.'
floor[r][posy] = '.';
// Update the current x coordinate position to r value
posx = r;
}// End of else
}// End of outer if condition
// Otherwise, checks if the move is 2
else if(move == 2)
{
// Checks if the position of x coordinate is MAX then cannot move down
// Because x coordinate cannot be more than MAX
if(posx == MAX)
{
// Display error message and exit the program
printf("Cannot Move DOWN");
exit(0);
}// End of if condition
// Otherwise move down
else
{
// Loops from current x coordinate position to current x coordinate position plus command1 value,
// which is number of position to move
for(r = posx; r < posx + command1; r++)
// Set the floor array row index r and column index position posy to '.'
floor[r][posy] = '.';
// Update the current x coordinate position to r value
posx = r;
}// End of else
}// End of outer if conditionEnd of else if condition
// Otherwise, checks if the move is 3
else if(move == 3)
{
// Checks if the position of y coordinate is MAX then cannot move right
// Because y coordinate cannot be more than MAX
if(posy == MAX)
{
// Display error message and exit the program
printf("Cannot Turn Right");
exit(0);
}// End of if condition
// Otherwise move right
else
{
// Loops from current y coordinate position to current y coordinate position plus command1 value,
// which is number of position to move
for(r = posy; r < posy+command1; r++)
// Set the floor array row index r and column index position posy to '.'
floor[posx][r] = '.';
// Update the current y coordinate position to r value
posy = r;
}// End of else
}// End of else if condition
// Otherwise, checks if the move is 4
else if(move == 4)
{
// Checks if the position of y coordinate is 0then cannot move left
// Because y coordinate cannot be less than zero
if(posy == 0)
{
// Display error message and exit the program
printf("Cannot Turn Left");
exit(0);
}// End of if condition
// Otherwise move right
else
{
// Loops from current y coordinate position to current y coordinate position minus command1 value,
// which is number of position to move
for(r = posy; r >= posy - command1; r--)
// Set the floor array row index r and column index position posy to '.'
floor[posx][r] = '.';

posy = r;
}// Update the current y coordinate position to r value
posy = r;
}// End of else
}// End of else if condition
// Otherwise, checks if the command is 6
else if(command == 6)
{
// Loops up to number of rows
for(r = 0; r < MAX; r++)
{
// Loops up to number of columns
for(c = 0; c < MAX; c++)
// Displays each cell value
printf("%c", floor[r][c]);
// Displays new line
printf(" ");
}// End of for loop
}// End of else if
}while(command != 9); // end of do while loop
}// End of main function

Sample Output:

2
5,10
6
.
.
.
.
.
.
.
.
.
.

3
5,12
6
.
.
.
.
.
.
.
.
.
.
............

1
5,7
6
.
.
.
. .
. .
. .
. .
. .
. .
. .
.............

3
5,10
6
.
.
. ..........
. .
. .
. .
. .
. .
. .
. .
.............

2
5,3
6
.
.
. ...........
. . .
. . .
. .
. .
. .
. .
. .
.............

4
5,15
6
.
.
. ...........
. . .
. . .
. ................
. .
. .
. .
. .
.............

9

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