Big Update to Pseudocode (Prompts updated and Array starting index changed)

[Dunroxiz]

CHANGE 7: Big Update (Small change to the Algorithm and Prompts changes)

Date: 27/04/2021

Author: @Dunroxiz

commit: 105483a

Explanation:

Update 1: "Train No: " changed to "Journey No: "

In this update, I have updated some prompts. In the previous solution, we asked the user to input Train Number but after reading the pre-release material again.
There it says, there is only one train that makes 4 return trips. So we shouldnt use "Train No: " in prompts and also shouldn't ask the user for "Train No" as an input.
To overcome this problem, I have changed the prompt "Train No: " to "Journey No: ". For example:

Before:

1. PRINT ("Train No: ", index, "| Train Departure Hour: ", UpTime[index], "| Remaining Tickets: ", UpSeats[index])

2. PRINT "Enter Train number corresponding to your departure hour: "

After:

1. PRINT ("Journey No: ", index, "| Departure Hour: ", UpTime[index], "| Tickets available: ", UpSeats[index])

2. PRINT "Enter Journey number for your chosen departure hour: "

---

Update 2 Prompts Updated

The prompts that were too long or had unnecessary words have been updated as well and made short and understandable.

For example:

Before:

1. PRINT "Do you want to buy ticket(s)? 'True' for yes and 'False' for no"

2. PRINT "Enter 'True' for yes and 'False' for no: "

3. PRINT "Enter Train number corresponding to your departure hour: "

After:

1. PRINT "Do you want to buy ticket(s)? Enter True or False: "

2. "Invalid Input! Enter True or False: "

3. PRINT "Enter Journey number for your chosen departure hour: "

---

Update 3 Array starting index changed

Another update is, I have changed the starting index of the Arrays from 0 to 1. This is done because printing/saying "Journey No: 0" doesn't feel right and it would be easy for user to understand the counting starting from 1.

For example:

Before it would print:

PRINT ">>>>>    TRAIN JOURNEY DISPLAY    <<<<<"
FOR index <- 0 TO 3
    PRINT ("Journey No: ", index, "| Departure Hour: ", UpTime[index], "| Tickets available: ", UpSeats[index])
    PRINT ("Journey No: ", index, "| Return Hour: ", DownTime[index], "| Tickets available: ", DownSeats[index])
    PRINT "---------"
NEXT index


OUTPUT would be

Journey No: 0 | Departure Hour: 09:00 | Tickets available: 480
Journey No: 0 | Return Hour: 10:00 | Tickets available: 480
.......

After update it would now print:

PRINT ">>>>>    TRAIN JOURNEY DISPLAY    <<<<<"
FOR index <- 1 TO 4
    PRINT ("Journey No: ", index, "| Departure Hour: ", UpTime[index], "| Tickets available: ", UpSeats[index])
    PRINT ("Journey No: ", index, "| Return Hour: ", DownTime[index], "| Tickets available: ", DownSeats[index])
    PRINT "---------"
NEXT index


OUTPUT would be

Journey No: 1 | Departure Hour: 09:00 | Tickets available: 480
Journey No: 1 | Return Hour: 10:00 | Tickets available: 480
.......

The declarations have been updated also. For example:

Before:

DECLARE UpTime : ARRAY[0:3] OF STRING 
DECLARE UpSeats : ARRAY[0:3] OF INTEGER
DECLARE UpPassengers : ARRAY[0:3] OF INTEGER 
DECLARE UpMoneyTotal : ARRAY[0:3] OF REAL 

DECLARE DownTime : ARRAY[0:3] OF STRING 
DECLARE DownSeats : ARRAY[0:3] OF INTEGER
DECLARE DownPassengers : ARRAY[0:3] OF INTEGER 
DECLARE DownMoneyTotal : ARRAY[0:3] OF REAL 

After:

DECLARE UpTime : ARRAY[1:4] OF STRING 
DECLARE UpSeats : ARRAY[1:4] OF INTEGER
DECLARE UpPassengers : ARRAY[1:4] OF INTEGER 
DECLARE UpMoneyTotal : ARRAY[1:4] OF REAL 

DECLARE DownTime : ARRAY[1:4] OF STRING 
DECLARE DownSeats : ARRAY[1:4] OF INTEGER
DECLARE DownPassengers : ARRAY[1:4] OF INTEGER 
DECLARE DownMoneyTotal : ARRAY[1:4] OF REAL 

All the FOR loops, WHILE loops and prompts have also been updated according to the new Array indexes. For example:

Before:

1. FOR index <- 0 TO 3

2. WHILE UpTrip < 0 OR UpTrip > 3 DO

3. PRINT "Error! Enter Journey number from (0, 1, 2, 3): "

4. WHILE DownTrip < UpTrip OR DownTrip > 3 DO

After:

1. FOR index <- 1 TO 4

2. WHILE UpTrip < 1 OR UpTrip > 4 DO

3. PRINT "Error! Enter Journey number from (1, 2, 3, 4): "

4. WHILE DownTrip < UpTrip OR DownTrip > 4 DO

---

Update 4: New Print statement added

commit New Print Statement

A new print statement has been added that prints out the price of the two-way journey that user has booked for.

it only prints this if the seats have been booked.

PRINT "Total price for two-way journey: $", OneWayCost * 2,

---

Update 5: Python File Updated

commit: e4740c0

In python file all the changes mentioned above have been applied except Array index starting from 1.

Instead, I have done this:

I add 1 to the index in print statement so where it should be printing "Journey No: 0" it would now print "Journey No: 1".

This addition to the index in print statement does not effect the index variable being used in the loop.

for index in range(0, 4):
    if UpSeats[index] != 0:
        print("Journey No:", index + 1, "| Departure Hour:", UpTime[index], "\t| Tickets available:", UpSeats[index], )
    else:
        print("Journey No:", index + 1, "| Departure Hour:", UpTime[index], "| Closed!",)

    if DownSeats[index] != 0:
        print("Journey No:", index + 1, "| Return Hour:", DownTime[index], "\t| Tickets available:", DownSeats[index],)
    else:
        print("Journey No:", index + 1, "| Return Hour:", DownTime[index], "| Closed!")

Plus, regarding the input from user. The user is shown the counting starting from 1.

When he is asked for input he will enter a number from 1 to 4 but 1 will be subtracted from that number upon assigning it to the variable.

The validation also remains the same because of this.
For Example:

Ex#1

```
UpTrip = int(input("Enter Journey number for your chosen departure hour: ")) - 1
while UpTrip not in range(0, 4):
    UpTrip = int(input("Error! Enter Journey number from (1, 2, 3, 4): ")) - 1
```

Ex#2

```
DownTrip = int(input("Enter Journey number for your chosen Return hour: ")) - 1
while DownTrip < UpTrip or DownTrip > 3:
    DownTrip = int(input("Error! Enter Journey number from the given list above: ")) - 1
```

All files have been updated!

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