Write pseudocode to read in a set of numbers from a file representing rolls of a
ID: 664087 • Letter: W
Question
Write pseudocode to read in a set of numbers from a file representing rolls of a single, 6-sided die.
The size of the file is unknown, so you'll have to use the "while not eof" to control reading. Track the
number of ones, twos, threes, fours, fives, and sixes rolled. When the entire contents of the file are
processed, display the total number of die rolls, the number of ones, twos, threes, etc. rolled, and the
probability of each possible roll (the number for that result divided by the total number of die rolls).
Explanation / Answer
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PSEUDOCODE
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BEGIN
DECLARE fileName,filePointer,onesCount=0,twosCount=0,threesCount=0,
foursCount=0,fivesCount=0,sixesCount=0,total=0,digit
DISPLAY "Enter Input file Name"
READ fileName
//Open file in read mode
filePointer = open(fileName,"r")
WHILE fp NOT EOF
DO
digit = fp.next()
IF digit EQUAL TO 1
+1
ELSE IF digit EQUAL TO 2
twosCount = twosCount +1
ELSE IF digit EQUAL TO 3
threesCount = threesCount +1
ELSE IF digit EQUAL TO 4
foursCount = foursCount +1
ELSE IF digit EQUAL TO 5
fivesCount = fivesCount +1
ELSE IF digit EQUAL TO 6
sixesCount = sixesCount +1
END IF
total = total +1
END WHILE
//Display number occurences
DISPLAY "Total Number of Dice rolled :"
DISPLAY total
DISPLAY "Number of once:"
DISPLAY onesCount
DISPLAY "Number of twos:"
DISPLAY twosCount
DISPLAY "Number of threes:"
DISPLAY threesCount
DISPLAY "Number of fours:"
DISPLAY foursCount
DISPLAY "Number of fives:"
DISPLAY fivesCount
DISPLAY "Number of sixes:"
DISPLAY sixesCount
//Probabilty
DISPLAY "Probability of once:"
DISPLAY onesCount/total
DISPLAY "Probability of twos:"
DISPLAY twosCount/total
DISPLAY "Probability of threes:"
DISPLAY threesCount/total
DISPLAY "Probability of fours:"
DISPLAY foursCount/total
DISPLAY "Probability of fives:"
DISPLAY fivesCount/total
DISPLAY "Probability of sixes:"
DISPLAY sixesCount/total
END
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input.txt file content
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1
2
2
3
3
4
4
4
5
6
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SAMPLE INPUT AND OUTPUT
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Enter Input file Name
input.txt
Total Number of Dice rolled :
10
Number of once:
1
Number of twos:
2
Number of thress:
2
Number of fours:
3
Number of fives:
1
Number of sixes:
1
Probability of once:
0.1
Probability of twos:"
0.2
Probability of threes:"
0.2
Probability of fours:"
0.3
Probability of fives:"
0.1
Probability of sixes:"
0.1
===============================================
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