This program illustrates the use of a multiset to record responses to a
polling question. First we create a multiset of responses, some of which
are, of course, duplicates. Then we display a summary of the responses.
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Respondents that strongly agree ..... 3
Respondents that agree .............. 2
Respondents that disagree ........... 4
Respondents that strongly disagree .. 1
Respondents that have no opinion .... 1
Press Enter to continue ...