Question

INPUT FILE INTO ARRAY. CHECKING FOR COMMAS AND SUCH. HOW TO DO?

void readFile(Candidate candidates[]) – reads the elections.txt file, fills the candidates[] array. Hint: use substr() and find() functions. Set Score to 0.

void List(Candidate candidates[]) – prints the array of Candidate structs. One candidate per one line, include all fields. Use setw() to display nice looking list.

void displayCandidate(Candidate candidates[]) – prints the complete information about the candidate

.
Candidate First(Candidate candidates[]) – returns single struct element: candidate with highest score

Candidate Last(Candidate candidates[]) – returns single struct element: candidate with lowest score

void Votes(Candidate candidates[]) – function sorts the candidates[] array by number of votes, the order in candidates[] array is replaced

void Scores(Candidate candidates[]) – calculates the percentage score for each candidate. Use the following formula: ??????=(CandidateVotes)/(sum of votes)*100%

Correct line for the reference: F=John,L=Smith,V=3342

The line errors that your program needs to detect, are as follows:

incorrect token / separator, example in line 5: F=Steven,L=JohnV=4429 --- (comma missing) – lines with this error need to be ignored

space in token, example in line 3: F=Hillary,X=Clinton, V=1622 --- lines with this error need to be read, error fixed, data included in your dataset

empty line, example in line 6 – empty lines need to be ignored

Example Textfile

F=Michael,L=John,V=3342

F=Danny,L=Red,V=2003

F=Hillary,L=Clinton, V=1588

F=Albert,L=Lee,V=5332

F=Steven,L=JohnV=4429

*IMPORTANT* How would I do the readFile function? It says to check if the commas are present, and that the program will correct the line if there is white spaces. How do i use the find() function? Please be DETAILED in explanations of each part of code. Beginner Coder. *IMPORTANT*

Code Skeleton We HAVE to follow:

#include

#include

#include

#include

#include

using namespace std;

struct Candidate {
string Fname;
string Lname;
int votes;
double Score;
};

const int MAX_SIZE = 100;

void readFile(Candidate[]);

void List(Candidate[]);

void Votes(Candidate[]);

void displayCandidate(Candidate);

Candidate First(Candidate[]);

Candidate Last(Candidate[]);

void Scores(Candidate[]);

int main() {

}

void readFile(Candidate candidates[]) {

string line;

ifstream infile;

infile.open("elections.txt");

while (!infile.eof()) {

getline(infile,line);

// your code here

}

infile.close();

}

void List(Candidate candidates[]) {

}

void Votes(Candidate candidates[]) {

}

void displayCandidate(Candidate candidates) {

}

Candidate First(Candidate candidates[]) {

}

Candidate Last(Candidate candidates[]) {

}

void Scores(Candidate candidates[]) {

}

TO ANUNAGA: I don't know what you want, this is the code we HAVE TO go by and code by and figure out. I can't give you anymore information. Please, either help me solve this or just don't.

Answer 1

#include <iostream>
#include <iomanip>
#include <stdlib.h>
#include <fstream>
#include <string>

using namespace std;

struct Candidate {
        string Fname;
        string Lname;
        int votes;
        double Score;
};

const int MAX_SIZE = 100;

void readFile(Candidate[]);

void List(Candidate[]);

void Votes(Candidate[]);

void displayCandidate(Candidate);

Candidate First(Candidate[]);

Candidate Last(Candidate[]);

void Scores(Candidate[]);

int main() {
        Candidate candidates[MAX_SIZE];
        readFile(candidates);

        Scores(candidates);
        Votes(candidates);

        cout << endl;
        List(candidates);
        
}


// trim a string, it removes any spaces at end and start of the string
string trim(string& str) {
        str.erase(0, str.find_first_not_of(' '));       //prefixing spaces
        str.erase(str.find_last_not_of(' ')+1);         //surfixing spaces
        return str;
}

// this method counts the occurrences of a character in string.
int countCharacter(string s, char c) {
        int count = 0;

        for (int i = 0; i < s.size(); i++) {
                if (s[i] == c) {
                        count++;
                }
        }

        return count;
}

// this method parses the token which is in format:
// F=<firstName>
// L=<lastName>
// V=<Votes>
void parseToken(string s, Candidate &c) {
        if(s[0] == 'F') {
                c.Fname = s.substr(2);
        } else if(s[0] == 'L') {
                c.Lname = s.substr(2);
        } else if(s[0] == 'V') {
                c.votes = atoi(s.substr(2).c_str());
        }
}

// this method converts a comma separated string to tokens
// it returns all tokens in form of a vector
void tokens(string s, Candidate &c) {
        
        // while string has a comma
        while(s.find(",") != string::npos) {
                // find index of comma in string
                int index = s.find(",");
                
                // break token till comma
                string token = s.substr(0, index);
                
                // remove the token from original string
                s = s.substr(index + 1);

                // remove space from start of token, and push to vector of tokens
                parseToken(trim(token), c);
        }

        // if last token is now not empty, push that too on vector
        if(!s.empty()) {
                parseToken(trim(s), c);
        }
}


void readFile(Candidate candidates[]) {

        string line;
        ifstream infile;
        infile.open("elections.txt");
        if(infile.fail()) {
                cout << "unable to open file elections.txt" << endl;
                return;
        }

        int i = 0;

        while (!infile.eof()) {

                // read a line from the file
                getline(infile,line);

                // Here comes the main logic to parse the line
                int commaCount = countCharacter(line, ',');

                if(commaCount != 2) {
                        // Ignore line,
                        cout << "Incorrect token separator: " << line << endl;
                } else if(line.empty()) {
                        // ignore empty line.
                } else {
                        // We now have a line which does contain correct commas
                        // and is not empty line.
                        tokens(line, candidates[i++]);
                }
        }

        infile.close();
}

void List(Candidate candidates[]) {
        for(int i=0; i<MAX_SIZE; i++) {
                if(!candidates[i].Fname.empty()) {
                        displayCandidate(candidates[i]);
                }
        }
}

void Votes(Candidate candidates[]) {
        int size = MAX_SIZE;
        for(int i=0; i<MAX_SIZE; i++) {
                if(candidates[i].Fname.empty()) {
                        size = i;
                        break;
                }
        }


        for(int i=0; i<size-1; i++) {
                int minIndex = i;

                for(int j=i+1; j<size; j++) {
                        if(candidates[j].Score < candidates[minIndex].Score) {
                                minIndex = j;
                        }
                }

                Candidate tmp = candidates[i];
                candidates[i] = candidates[minIndex];
                candidates[minIndex] = tmp;
        }
}

void displayCandidate(Candidate candidate) {
        cout << candidate.Fname << " " << candidate.Lname << " " << candidate.Score << endl;
}

Candidate First(Candidate candidates[]) {
        double max = 0;
        Candidate result;
        for(int i=0; i<MAX_SIZE; i++) {
                if(!candidates[i].Fname.empty() && candidates[i].Score > max) {
                        max = candidates[i].Score;
                        result = candidates[i];
                }
        }
        return result;
}

Candidate Last(Candidate candidates[]) {
        double min = 100;
        Candidate result;
        for(int i=0; i<MAX_SIZE; i++) {
                if(!candidates[i].Fname.empty() && candidates[i].Score < min) {
                        min = candidates[i].Score;
                        result = candidates[i];
                }
        }
        return result;
}

void Scores(Candidate candidates[]) {
        int total = 0;
        for(int i=0; i<MAX_SIZE; i++) {
                if(!candidates[i].Fname.empty()) {
                        total += candidates[i].votes;
                }
        }
        
        for(int i=0; i<MAX_SIZE; i++) {
                if(!candidates[i].Fname.empty()) {
                        candidates[i].Score = candidates[i].votes * 100.0/total;
                }
        }
}

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