l7.2b

<B>Digital的Unix操作系统VAX 4.2源码</B>

#print
Does the input

  sum from {i = -n} to {i = +n}

produce the same output as the input

  sum from i=-n to i=+n

Answer yes or no.
#copyin
#user
#uncopyin
#match yes
#log
#next
7.1c