Question

1. In C++, there are 4 students that are running for class president. Create three arrays: the candidate’s name, the number of votes the candidate receives, and the candidate’s percentage of the total votes. Your program should be broken down into at least 3 functions: find the total number of votes, calculate values for the percentage each candidate received, and sort the number of votes from highest to lowest. Write the candidate’s name, the total number of votes they received, and the percentage of the total using the following: Joe 20 Bill 30 Sue 40 Mary 35

Answer 1

Please up vote ,comment if any query . Thanks for question .Be safe.

Note : check attached image for output ,code compiled and c++14 code blocks ide .

Program Plan:

1. delcare all array with predefine name and vote .
2. declare percentage empty array of size 4
3. call calculatePercentage function will calculate % and assign to array
4. sort Function sorts the votes using selection sort .
5. selection sort first find minimum votes in array and replace with outer loop index
6. also swap % value and name too .
7. print all detail on console using function

Program:

#include<iostream>
#define totalCandidate 4
using namespace std;

int getTotalVotes(int voteArray[],int length);
void calculatePercentage(int voteArray[],int length,double percentageArray[]);
void sortCandidateVotes(int voteArray[],int length,double percentageArray[],string candidateNameArray[]);
void printVoteDetail(int voteArray[],int length,double percentageArray[],string candidateNameArray[]);
int main()
{
    string candidateName[]={"Joe","Bill","Sue","Marry"}; //Array of string candidate name
    int candidateVotes[]= {20,30,40,35}; //Array of integer candidate vote got
    double votingPercentage[totalCandidate]; //percentage array for calculation
    calculatePercentage(candidateVotes,totalCandidate,votingPercentage);//calculate percentage
    sortCandidateVotes(candidateVotes,totalCandidate,votingPercentage,candidateName);//sort votes in ascending order using selection sort
    printVoteDetail(candidateVotes,totalCandidate,votingPercentage,candidateName); //print detail

}

//this method get vote array as argument and its size
//return integer total votes
int getTotalVotes(int voteArray[],int length)
{
    int sum=0;
    for(int i=0;i<length;i++) //loop from 0 to size
    {
        sum+=voteArray[i]; //store in sum
    }
    return sum;//return sum
}

//this function takes vote array and percentage array and its size
//return void
//calculate the percentage of vote each candidate
void calculatePercentage(int voteArray[],int length,double percentageArray[])
{
    int totalVotes=getTotalVotes(voteArray,length); //get total votes
    for(int i=0;i<length;i++) //run a loop from 0 to size
    {
        //vote of candidate*100/total votes
        percentageArray[i]=(double)voteArray[i]*100.0/totalVotes; //calculate percentage
    }
}
//this function takes name ,vote and percentage array its length
//return void
//sort the vote array by selection sort and its name and percentage too
void sortCandidateVotes(int voteArray[],int length,double percentageArray[],string candidateNameArray[])
{
    //run a loop from 0 to size -1 (4-1)
    for(int i=0;i<length-1;i++)
    {
        int index=i; //store index in i
        for(int j=i+1;j<length;j++) //loop from next element of i index to length
        {
            if(voteArray[j]<voteArray[index]) //check index element is greater than current array element
            {
                index=j; //store minimum vote index in index variable
            }
        }
        //swap votes ,percentage and name
        int tempVotes=voteArray[i]; //store i index votes in temp
        double percentage=percentageArray[i]; //store in perc. in temp
        string name=candidateNameArray[i]; //store name
        voteArray[i]=voteArray[index]; //swap value
        voteArray[index]=tempVotes;

        percentageArray[i]=percentageArray[index];
        percentageArray[index]=percentage;

        candidateNameArray[i]=candidateNameArray[index];
        candidateNameArray[index]=name;
    }

}
//takes all array and return void print detail on console
void printVoteDetail(int voteArray[],int length,double percentageArray[],string candidateNameArray[])
{
    cout<<"****************Voting Result******************"<<endl;
    cout<<"Name\tvotes\tvote%"<<endl; //print header by tab
        for(int i=0;i<length;i++)
        {
            //print name tab votes and percentage separated by tab
            cout<<candidateNameArray[i]<<'\t'<<voteArray[i]<<'\t'<<percentageArray[i]<<"%"<<endl;
        }
}

Output :

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