Scenario: A robot is sitting in a chair with its arms facing down. Write an algo

Question

Scenario: A robot is sitting in a chair with its arms facing down. Write an algorithm, using pseudocode, to make the robot: stand up walk until it senses a wall turn around walk back to the chair sit back down in the origin starting position Finally, output the total number of steps taken. Commands: In addition to our standard pseudocode commands, you must also use the following robot control commands: sit stand step (one step forward) raise arms (parallel to floor) lower arms (pointing to floor) sense (only if arms are raised) turn (90 degrees right) Immediately after issuing a sense command, you can check whether the robot is at the wall as follows: if at wall or alternatively if not at wall You should use comments, sequence, comparison, iterative instructions in this project. Assumptions You must assume the following facts: The robot's initial sitting position is directly facing the target wall. There are no obstacles between the robot and the wall. The wall is 1 or more exact steps from the chair. The wall is sensed when it is less than 1 step from the robot's arms. The length of the robot's arms are slightly less than the length of 1 step. Your solution Your solution must include all of the following: Adequate comments Initialization and use of at least one variable Sequential flow of control Conditional flow of control Iterative flow of control Handling of any special cases Output of the total number of steps taken Your pseudocode must conform to the course pseudocode guidelines. Once you have completed the algorithm: Make sure your comments are detailed enough, someone without any knowledge of algorithms or pseudocode could follow what is happening.

Explanation / Answer

set n to 0
#no of steps initiated to 0
set steps to 0
#the robot stands
stand
#loop to move robot to the wall
while n==0
#robot takes 1 step
step
#no of steps incremented by 1
add 1 to steps
add steps to steps
#checking if the wall is reached
raise arms
sense
#loop condition set if wall reached,if not the loop repeats
if at wall
set n to 1
lower arms
#when robot reaches till the wall, two 90 degree turns to turn it around
turn
turn
#no of steps from chair to wall will be same as the no from wall to chair
while steps!=0
#loop to take the robot back to chair
step
set steps to steps-1
#if out of loop, that means chair reached.2 turns to make the robot face the wall
turn
turn
#the robot sits on the chair
sit
#the total no. of steps taken is calculated and printed
set totalSteps to 2*steps
print"The total steps taken are",totalSteps

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