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Solution by Ruben Westerberg
ch-1.pl and ch-1.p6
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Intersecting lines.
Run the program. you will be propted to enter two points for the first line and then two points for the second line.
Points are intered as interleved xy pairs
example:
When prompted to enter the line starting at the origin and ending at x=5 and y=10, the two points are entered as follows:
0 0 5 10
ch-2.pl and ch-2.p6
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Run the program to demonstrate history of every assignement to a variable.
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