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#!/usr/bin/gawk
# Challenge 004
#
# Challenge #1
# Write a script to output the same number of PI digits as the size of your script.
# Say, if your script size is 10, it should print 3.141592653.
#
# we need a big-math library to compute any large number of digits
BEGIN {
size = ARGV[1] ? ARGV[1] : 1000;
bc = "echo 'scale=" (size+10) "; 4*a(1)' | bc -l";
pi = "";
while ((bc | getline temp) > 0) {
gsub(/\\/, "", temp);
pi = pi temp;
}
pi = substr(pi, 1, size+1)
print pi;
exit 0;
}
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