babbage% gcc -o darts darts.c && darts 
This program approximates Pi by picking 5000 points in a square
and counting the number in an appropriate circle.

3942 points were inside the circle, and
the approximate value of Pi is 3.15360 .
babbage% darts
This program approximates Pi by picking 5000 points in a square
and counting the number in an appropriate circle.

3924 points were inside the circle, and
the approximate value of Pi is 3.13920 .
babbage% darts
This program approximates Pi by picking 5000 points in a square
and counting the number in an appropriate circle.

3854 points were inside the circle, and
the approximate value of Pi is 3.08320 .
babbage% darts
This program approximates Pi by picking 5000 points in a square
and counting the number in an appropriate circle.

3905 points were inside the circle, and
the approximate value of Pi is 3.12400 .