BEGIN{
    x = 42; print "x is",x
    x += 1; print "x += 1 is",x
    x -= 1; print "x -= 1 is",x
    x *= 2; print "x *= 2 is",x
    x /= 2; print "x /= 2 is",x
    x %= 5; print "x %= 5 is",x
    x ^= 4; print "x ^= 4 is",x
}