This program displays first a set, then a multiset, of positive integer values.
In each case, the user is permitted to enter values of the user's choice and
the program provides the lower and upper bound of each value entered, relative
to the set of values, or the multiset of values, as the case may be.
Press Enter to continue ...

Here are the values in the set:
2 4 6 8 10

Enter a value to see its lower and upper bound
in the above set (or end-of-file to quit): 6

Lower bound of 6 = 6
Upper bound of 6 = 8
Press Enter to continue ...

Enter a value to see its lower and upper bound
in the above sequence (or end-of-file to quit): 2

Lower bound of 2 = 2
Upper bound of 2 = 4
Press Enter to continue ...

Enter a value to see its lower and upper bound
in the above sequence (or end-of-file to quit): 10

Lower bound of 10 = 10
Upper bound of 10 = the end of the range
Press Enter to continue ...

Enter a value to see its lower and upper bound
in the above sequence (or end-of-file to quit): 1

Lower bound of 1 = 2
Upper bound of 1 = 2
Press Enter to continue ...

Enter a value to see its lower and upper bound
in the above sequence (or end-of-file to quit): 12

Lower bound of 12 = the end of the range
Upper bound of 12 = the end of the range
Press Enter to continue ...

Enter a value to see its lower and upper bound
in the above sequence (or end-of-file to quit): ^Z

Now we do the same for a multiset of values.
Press Enter to continue ...

Here are the values in the multiset:
2 2 2 4 4 4 6 6 6 8 8 8 10 10 10

Enter a value to see its lower and upper bound
in the above multiset (or end-of-file to quit): 2

Lower bound of 2 = 2
Upper bound of 2 = 4
Press Enter to continue ..

Enter a value to see its lower and upper bound
in the above sequence (or end-of-file to quit): 6

Lower bound of 6 = 6
Upper bound of 6 = 8
Press Enter to continue ..

Enter a value to see its lower and upper bound
in the above sequence (or end-of-file to quit): 10

Lower bound of 10 = 10
Upper bound of 10 = the end of the range
Press Enter to continue ..

Enter a value to see its lower and upper bound
in the above sequence (or end-of-file to quit): ^Z