Solution by Ruben Westerberg

ch-1.pl and ch-1.p6
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Run the program with commanline arguments enclosed in single quotes to prevent the shell from performing its own brace expansion. This will to multiple levels of expension and generate all combinations;
	eg 
	./ch-1.pl '{Bob,Tim} say hello to {Mary,Rose}'

	this will ouput 4 lines
	Bob say hellow to Mary
	Bob say hellow to Rose
	Tim say hellow to Mary
	Tim say hellow to Rose


ch-2.pl and ch-2.p6
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Run the program to demonstrate calling a C function