Chapter 11, Problem 12PP

Solution to Programming Project 11.12

To combat election fraud, your city is instituting a new voting procedure. The ballot has a letter associated with every selection a voter may make. A sample ballot is shown.

1. VOTE FOR MAYOR

A.

Pincher, Penny    ▢

B.

Dover, Skip    ▢

C.

Perman, Sue    ▢

2. PROPOSITION 17

D.

YES    ▢

E.

NO    ▢

3. MEASURE 1

F.

YES    ▢

G.

NO    ▢

4. MEASURE 2

H.

YES    ▢

I.

NO    ▢

After submitting the ballot, every voter receives a receipt that has a unique ID number and a record of the voting selections. For example, a voter who submits a ballot for Sue Perman, Yes on Proposition 17, No on Measure 1, and Yes on Measure 2 might receive a receipt with

ID 4925 : CDGH

The next day the city posts all votes on its Web page sorted by ID number. This allows a voter to confirm their submission and allows anyone to count the vote totals for themselves. A sample list for the sample ballot is shown.

4925	CDGH
4926	AEGH
4927	CDGI
4928	BEGI
4929	ADFH

Write a program that reads the posted voting list from a file and outputs the percent of votes cast for each ballot item. You may assume that the file does not have any header lines. The first line will contain a voter ID and a string representing votes. Define a class named Voter that stores an individual’s voting record. The class should have a constructor that takes as input a string of votes (for example, “CDGH”), a voter ID, and accessor function(s) that return the person’s ID and vote for a specific question. Store each Voter instance in an array or vector. Your program should iterate over the array to compute and output the percent of votes cast for each candidate, proposition, and measure. It should then prompt the user to enter a voter ID, iterate over the list again to find the object with that ID, and print his or her votes.