Does this code meet these requirements?

Your code must include the following:

Decision Making.

Looping.

User$-$defined functions. The code must include three $(3)$ user$-$defined functions$$no more, no less.

These functions must be used$/$called for main functionality.

At least one function must take at least one parameter. The function must use the parameter.

At least one function must return something. The return must be used by the receiving end.

At least one function that takes at least one parameter and returns something. Both the parameter and return must be used.

No function should be void$/$void$.$ In other words, user$-$defined functions must meet $1\mathrm{.}2$ and$/$or $1\mathrm{.}3$ above.

Best$-$Practices. Your code must be written with best practices in mind. A few reminders below:

Variables.

Meaningful names and adequate data types.

If you have a value used in multiple places, put it into a variable $($if it changes$)$ or into a "DEFINE" or "CONST" $($if it does not change$),$ and use the variable$/$constant as you go through the code. For example, if your full speed is $150,$ instead of using the value $150$ in multiple places, store the variable speed $=150.$ This variable can then be used in different places of the code and as "speed$/2"$ for half speed or similar variations. Ensure consistency with the use of the variables$/$constants$.$

White space. White space is encouraged for indentations of your code $"$in the right places" and to "break" the code into sections such as variables, function calls, printf$/$scanf statements, operations, etc.

Clean Code. Remove all lines of code that have no functionality $($other than the required header$/$comments$).$ This includes:

debugging lines

default Arduino$-$embedded comments

unused variables

code that is not meant to meet the provided requirements.

Please use in$-$program "comments by requirement" ONLY and a complete header. NOTE: Over$-$commented code and comments with functionality descriptions will not be allowed for demos.

#include

#define PIN$\_$Motor$\_$AIN$\_17$

#define PIN$\_$Motor$\_$PWMB $6$

#define PIN$\_$Motor$\_$PWMA $5$

#define PIN$\_$Motor$\_$BIN$\_18$

#define PIN$\_$Motor$\_$STBY $3$

#define ECHO$\_$PIN $12$

#define TRIG$\_$PIN $13$

#define FULL$\_$SPEED $150$

#define CAUTION$\_$SPEED $50$

#define CLOSE$\_$ENOUGH$\_$DISTANCE $50$

#define TOO$\_$CLOSE$\_$DISTANCE $10$

#define ENOUGH$\_$SPACE$\_$DISTANCE $110$

#define BACKUP$\_$DISTANCE $20$

Servo servo;

int angle $=90$;

struct Distances $\{$

int left;

int right;

$\}$;

void setup$()\{$

Serial.begin$(9600)$;

pinMode$($PIN$\_$Motor$\_$PWMA, OUTPUT$)$;

pinMode$($PIN$\_$Motor$\_$PWMB$,$ OUTPUT$)$;

pinMode$($PIN$\_$Motor$\_$AIN$\_1,$ OUTPUT$)$;

pinMode$($PIN$\_$Motor$\_$BIN$\_1,$ OUTPUT$)$;

pinMode$($PIN$\_$Motor$\_$STBY$,$ OUTPUT$)$;

pinMode$($TRIG$\_$PIN, OUTPUT$)$;

pinMode$($ECHO$\_$PIN, INPUT$)$;

servo.attach$(10)$;

servo.write$($angle$)$;

$\}$

void loop$()\{$

digitalWrite$($PIN$\_$Motor$\_$STBY$,$ HIGH$)$;

float distance $=$ readPing$()$;

if $($distance $>$ ENOUGH$\_$SPACE$\_$DISTANCE$)\{$

moveForward$($FULL$\_$SPEED$)$;

$\}$ else if $($distance $>$ CLOSE$\_$ENOUGH$\_$DISTANCE && distance $<=$ ENOUGH$\_$SPACE$\_$DISTANCE$)\{$

moveForward$($CAUTION$\_$SPEED$)$;

$\}$ else if $($distance $>$ TOO$\_$CLOSE$\_$DISTANCE && distance $<=$ CLOSE$\_$ENOUGH$\_$DISTANCE$)\{$

Distances distances $=$ Peer$()$;

if $($distances$.$right $>=$ distances.left$)\{$

turnRight$()$;

$\}$ else $\{$

turnLeft$()$;

$\}$

delay$(1500)$;

$\}$ else $\{$

moveBackward$()$;

delay$(1000)$;

Stop$()$;

delay$(1000)$;

$\}$

$\}$

Distances Peer$()\{$

Distances distances;

lookLeft$()$;

delay$(1000)$;

distances.left $=$ readPing$()$;

lookStraight$()$;

delay$(500)$;

lookRight$()$;

delay$(1000)$;

distances.right $=$ readPing$()$;

lookStraight$()$;

delay$(500)$;

return distances;

$\}$

int readPing$()\{$

digitalWrite$($TRIG$\_$PIN, LOW$)$;

delayMicroseconds$(2)$;

digitalWrite$($TRIG$\_$PIN, HIGH$)$;

delayMicroseconds$(10)$;

digitalWrite$($TRIG$\_$PIN, LOW$)$;

unsigned long duration$\_$us $=$ pulseIn$($ECHO$\_$PIN, HIGH$)$;

float distance$\_$cm $=0\mathrm{.}017*$ duration$\_$us;

Serial.print$("$distance: $")$;

Serial.print$($distance$\_$cm$)$;

Serial.println$("$ cm$")$;

return distance$\_$cm;

$\}$

void Stop$()\{$

digitalWrite$($PIN$\_$Motor$\_$AIN$\_1,$ HIGH$)$;

analogWrite$($PIN$\_$Motor$\_$PWMA, $0)$;

digitalWrite$($PIN$\_$Motor$\_$BIN$\_1,$ HIGH$)$;

analogWrite$($PIN$\_$Motor$\_$PWMB$,0)$;

$\}$

void moveForward$($int speed$)\{$

digitalWrite$($PIN$\_$Motor$\_$AIN$\_1,$ HIGH$)$;

analogWrite$($PIN$\_$Motor$\_$PWMA, speed$)$;

digitalWrite$($PIN$\_$Motor$\_$BIN$\_1,$ HIGH$)$;

analogWrite$($PIN$\_$Motor$\_$PWMB$,$ speed$)$;

$\}$

void moveBackward$()\{$

digitalWrite$($PIN$\_$Motor$\_$AIN$\_1,$ LOW$)$;

analogWrite$($PIN$\_$Motor$\_$PWMA, FULL$\_$SPEED$)$;

digitalWrite$($PIN$\_$Motor$\_$BIN$\_1,$ LOW$)$;

analogWrite$($PIN$\_$Motor$\_$PWMB$,$ FULL$\_$SPEED$)$;

$\}$

void lookRight$()\{$

Stop$()$;

servo.write$(150)$;

$\}$

void lookStraight$()\{$

Stop$()$;

servo.write$(90)$;

$\}$

void lookLeft$()\{$

Stop$()$;

servo.write$(40)$;

$\}$

void turnLeft$()\{$

digitalWrite$($PIN$\_$Motor$\_$AIN$\_1,$ HIGH$)$;

analogWrite$($PIN$\_$Motor$\_$PWMA, $0)$;

digitalWrite$($PIN$\_$Motor$\_$BIN$\_1,$ HIGH$)$;

analogWrite$($PIN$\_$Motor$\_$PWMB$,100)$;

$\}$

void turnRight$()\{$

digitalWrite$($PIN$\_$Motor$\_$AIN$\_1,$ HIGH$)$;

analogWrite$($PIN$\_$Motor$\_$PWMA, $100)$;

digitalWrite$($PIN$\_$Motor$\_$BIN$\_1,$ HIGH$)$;

analogWrite$($PIN$\_$Motor$\_$PWMB$,0)$;

$\}$