Election Program help please!!!

[wraith tmk]

Hello! I previously wrote another post with the same problem, but now I have more code than I did and would like some help with it now that I have something to work off of! It is a program for my Comp. Sci. class, and my professor just isn't much help. I need help with the functions I should be doing! The ones I specifically need help with are lookupCandidateCount, GetElectionWinner, and getTotalVotes. You will see that right now they only have the return -1; Thank you so much!!! (side note: We are not allowed to change anything but the functions that I listed. This is a base code given to me by a professor.)

#include <iostream>
#include <string>
#include <fstream>
#include <iomanip>

using namespace std;

int input_data(string*& candidates, int*& vote_count, string filename);
int lookupCandidateCount(string search_name, string names[], int votes[],
                         int num_candidates);
int GetElectionWinner (int votes[], int num_candidates);
void DisplayElectionStatistics (string candidates[], int votes[], int num_candidates);


int main()
{
    string* candidates = nullptr;
    int* votes = nullptr;
    
    int num_candidates;
    
    num_candidates = input_data(candidates, votes, "canidate_votes.txt");
    
    if (num_candidates == -1)
    {
        cout << "Error reading data. Check the file name and try again." << endl;
     }
    else{
        int choice = -1;
        
        string name;
        int vote_count;
        int index_winner;
        char c;
        
        do
        {
            cout << "Main Menu" << endl;
            cout << "1. Candidate Count Lookup" << endl;
            cout << "2. Get Election Winner" << endl;
            cout << "3. Display Election Statistics" << endl;
            cout << "4. Exit" << endl;
            
            do
            {
                cout << "--: " << endl;
                cin >> choice;
            
            if (choice < 1 && choice > 4)
                cout << "Invalid selection. Choose again." << endl;
        } while (choice < 1 && choice > 4);
        
        switch (choice)
        {
            case 1:
                cout << endl << endl;
                cout << "Enter your candidate's last name: ";
                cin.ignore();
                getline(cin, name);
                vote_count = lookupCandidateCount(name, candidates, votes, num_candidates);
                if (vote_count == -1)
                    cout << "Error: could not find this candidate in the data." << endl;
                else
                    cout << name << " drew " << vote_count << " votes in this election." << endl;
                cout << endl << endl;
                break;
            case 2:
                index_winner = GetElectionWinner (votes, num_candidates);
                
                if (index_winner != -1)
                {
                    cout << endl << endl;
                    cout << "The winner of this election was " << candidates[index_winner];
                    cout << " with " << votes[index_winner] << " votes." << endl;
                }
                else{
                    cout << endl << endl;
                    cout << "Error: Could not retrieve election winner from data... " << endl;
                    cout << endl << endl;
                }
                break;
            case 3:
                cout << endl << endl;
                DisplayElectionStatistics(candidates, votes, num_candidates);
                cout << endl << endl;
                break;
            case 4:
                return 0;
                break;
            default:
                cout << "\n\n Error: invalid menu choice. Choose again. \n\n";
            }
        } while (choice != 4);
    }
}

int lookUpCandidateCount (string search_name, string names[], int votes[], int num_candidates)
{
    
    return -1;
}

int GetElectionWinner(int votes[], int num_candidates)
{
    return -1;
}

int getTotalVotes (int votes[], int num_candidates)
{
    return -1;
}

void DisplayElectionStatistics(string candidates[], int votes[], int num_candidates)
{
    cout << "Error: This function is not yet complete." << endl;
}



int get_fsize(string filename)
{
    ifstream file;
    int size = 0;
    
    file.open(filename);
    
    if (file.is_open())
    {
        string line;
        while (getline(file, line))
            size++;
    }
    else
        size = -1;
    
    file.close();
    return size;
}

int input_data(string*& candidates, int*& vote_count, string filename)
{
    ifstream file;
    
    int size = get_fsize(filename);
    
    if (size == -1)
        return size;
    
    else
    {
        file.open(filename);
        
        if (file.is_open())
        {
            string line;
            
            candidates = new string[size];
            vote_count = new int[size];
            
            int i = 0;
            
            while (getline(file, line))
            {
                int seperator = 0;
                
                while (line[seperator] != ',')
                {
                    candidates [i] += line[seperator];
                    seperator++;
                }
                seperator++;
                string vote_count_str = "";
                while (seperator < line.size())
                {
                    vote_count_str += line[seperator];
                    seperator++;
                }
                vote_count[i] + stoi(vote_count_str);
                i++;
            }
            file.close();
        }
        else
            size + -1;
        
        return size;
        
    }
}

[ne555]

> The ones I specifically need help with are lookupCandidateCount,
> GetElectionWinner, and getTotalVotes. You will see that right now they only
> have the return -1;
and I guess that they shouldn't just return -1 but do some calculations instead.
write pseudocode at least.

ps: ¿have you tested input_data()?

[wraith tmk]

Hi, so they are supposed to return -1, most of this code was our base code given to use by the professor. I would write pseudo code, but I have no idea what I’m even supposed to be doing to even start the functions.

[whitenite1]

@wraith tmk

On lines 48 and 50 of your above code, you should be using the OR command, '||', NOT the AND command. '&&', as the input cannot be less than and greater than at the same time. Also, since you only have 3 options in your main menu, you should change the '> 4' to '> 3' or add in the option 4, to quit the program.

[wraith tmk]

@whitenite1
That was a mistake on my part with the menu! As for the symbols, we are not allowed to change anything in the main.

[seeplus]

After L93 you need code to free (use delete []) the memory allocated with new at lines 156/157.