// OUTPUT (Both big.txt and small.txt are tested in one run) //

Please enter your data file name with the .txt extension:
oops

Failed to open oops

Please enter your data file name with the .txt extension:
small

Failed to open small

Please enter your data file name with the .txt extension:
small.txt

Opened small.txt

TOTAL PASSENGERS: 14
TOTAL PAID: $113.52
AVG COST PER PERSON: $8.11
TOTAL TRIPS: 6

Would you like to display a table? Y/N
Y

ENTRY    PICKUP    DROPOFF   #PASS     DIST      FARE$     TOLL$     TOTAL$    $/MILE
1         129       7         3         1.30      7.50      0.00      7.50      5.77
2         36        69        1         11.41     32.00     5.76      37.76     2.80
3         7         41        1         4.60      15.00     5.76      20.76     3.26
4         150       61        2         6.75      23.00     0.00      23.00     3.41
5         112       17        1         3.84      15.00     0.00      15.00     3.91
6         80        112       6         1.64      9.50      0.00      9.50      5.79

Would you like to open another file? Y/N
Y

Please enter your data file name with the .txt extension:
big.txt

Opened big.txt

TOTAL PASSENGERS: 100
TOTAL PAID: $1052.04
AVG COST PER PERSON: $10.52
TOTAL TRIPS: 48

Would you like to display a table? Y/N
A

Would you like to display a table? Y/N
N

Would you like to open another file? Y/N
A

Would you like to open another file? Y/N
N

// PSEUDO-CODE //

DEFINE a FUNCTION that RETURNS an INTEGER ReadFile(INFILE REFERENCE file){

	SET INTEGER counter TO -1;

	WHILE (file IS NOT AT THE END){
	
		SET each appropriate ARRAY value at [counter] TO VALUE FROM file;
		
		SET totalFare[counter] TO fareAmount[counter] + tollAmount[counter];

		IF (distanceTravelled[counter] IS NOT 0){
		
			SET costPerMile[counter] TO (totalFare[counter] / distanceTravelled[counter]);

		}ELSE SET costPerMile[counter] TO 0;

	}

}

DEFINE a NULL RETURN FUNCTION GenerateTotals(INTEGER numEntries){

	DEFINE INTEGER totalPassengers;
	DEFINE DOUBLE totalPaid;

	SET totalPassengers TO SUM OF EACH passengerTotal;
	SET totalPAID TO SUM OF EACH totalFare;

	PRINT ([Total passengers, Total paid, Avg. cost per person (totalPaid / totalPassengers), Number of entries (total trips)]);

}

MAIN(){

	DEFINE INFILE inFile;
	INITIALIZE CHAR choice AT 'Y';

	WHILE (choice IS 'Y'){

		WHILE (inFile IS NOT OPEN){
	
			TAKE INPUT for fileName;
			TRY to OPEN fileName;

		}

		INITIALIZE INTEGER numEntries AT RETURN VALUE FROM ReadData USING inFile;
	
		GenerateTotals USING numEntries;

		SET choice TO 'A';

		WHILE (choice IS NOT 'Y' AND choice IS NOT 'N'){
		
			PRINT( "Do you want to print a table? Y/N" );

			SET choice TO INPUT;

		}

		IF (choice IS 'Y'){
		
			PRINT([Table of values from file]);

		}

		SET choice TO 'A';

		WHILE (choice IS NOT 'Y' AND choice IS NOT 'N'){
		
			PRINT( "Do you want to enter another file? Y/N" );

			SET choice TO INPUT;

		}

		CLOSE file;

		// Should loop if user entered Y

	}
}