Question

c++

Votes received by the candidate. Your program should also output the winner of the election. A sample output is: The Winner of the Election is Duffy. The input data should come from the file. Use 3 separate arrays to store the names, votes, and percentages before they are displayed. Include functions inputValues to input values for candidate names and votes received and place them in arrays. calcPercents which fills an array with the percentage of votes each candidate got. Determine Winner which returns the name of the winner. This function receives the percentage array and name array. Display Results which displays on the screen the output as shown. All arrays are declared in the main() function. Arrays must be passed to a function should the function need to process them.

Answer 1

#include <iostream>
#include <string>
#include <fstream>
using namespace std;

//function to display the array data
void displayResults(string name[],int votes[],float percentages[],int size)
{
    int total=0;
    cout<<"Candidate\tVotes Received\t% of Total Votes\n\n";
    for(int i=0;i<size;i++)
    {
        total+=votes[i];
        cout<<name[i]<<"\t\t"<<votes[i]<<"\t\t"<<percentages[i]<<endl;
    }
    cout<<"Total\t"<<total<<"\t"<<total/size;
}

//function to detrmin winner and returns the winner name
string determineWinner(string name[],float percentages[],int size)
{
    string mname="";
    double max=0;
    //loop through array and find the one with max votes
    for(int i=0;i<size;i++)
    {
        if(max<percentages[i])
        {
            max=percentages[i];
            mname=name[i];
        }
    }
    return mname;
}

//function to calculate % of votes
void calcPercents(int votes[],float percentages[],int size)
{
    int total=0;
    for(int i=0;i<size;i++)
    {
        total+=votes[i];
    }
    for(int i=0;i<size;i++)
    {
        percentages[i]=(votes[i]*100)/total;
    }
}

//function which reads votes data from file and stores them into array
int inputValues(string name[],int votes[])
{
    int size=0;
    ifstream myfile ("votes.txt");
    if (myfile.is_open())
    {
        while ( myfile>>name[size] )
        {
            myfile>>votes[size];
            size++;
        }
    myfile.close();
}
else
cout << "Unable to open file";
    return size;
}

//main function which triggers the above funcitons
int main()
{
    const int size=10;
   string name[size];
   int votes[size];
   float percentages[size];
   int length=inputValues(name,votes);
   calcPercents(votes,percentages,length);

   displayResults(name,votes,percentages,length);
   cout<<"\n\nThe Winner of the election is "<<determineWinner(name,percentages,length)<<endl;
   return 0;
}

Sample Output:

Candidate       Votes Received  % of Total Votes                                                                                                                

                                                                                                                                                                

A       5000    28                                                                                                                                              

B       4000    22                                                                                                                                              

C       6000    34                                                                                                                                              

D       2500    14                                                                                                                                              

Total   17500   4375                                                                                                                                            

                                                                                                                                                                

The Winner of the election is C