Solutions to HW 5
------------------

1. Here's a gawk script. It does not handle multiple comments on a given
line.

BEGIN {
    incomment = 0
}
/^\/\// {
    print ""
    next
}
/\/\// {
    gsub(/\/\/.*/,"",$0)
    print
    next
}
incomment == 1 {
    if (gsub(/.*\*\//,"",$0)) {
        incomment = 0
        print
    } else {
        print ""
    }
    next
}
incomment == 0 {
    gsub(/\/\*.*\*\//,"",$0)
    if (gsub(/\/\*.*/,"",$0)) {
        incomment = 1
    }
    print
}