Write a program that accepts one command line argument, the name of a file containing data to be drawn as a pie chart, and draws the pie chart in a window.
• Sample data file, birds.txt, contains the one-word categories of birds, and the number of each kind.
swallow 10
magpie 5
fairywren 7
osprey 2
fantail 3
• The pie chart must use a different colour for each pie segment, and display a legend that shows the labels and the percentage for each.
• Your program should support up to 10 categories.
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