Error on getline function no instance matches the arguments - c++

Question

Why my code is not executing and showing me error ?? Im getting error on this line
while (getline(s, word, ' , '))
my Code is below:
#include <fstream>
#include <string>
#include <string.h>
#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;
// first we define a class that will represent all the candidates
class Candidate
{
string name;
int votes;
public:
Candidate()
{
name = "";
int votes = 0;
}
Candidate(string cand_name, int vote_count)
{
name = cand_name; votes = vote_count;
} string getName() { return name; } int getVotes() { return votes; } void get_details() { cout << name << ", " << votes << endl; }
//Following member method is used to increment the vote count
void vote_this_candidate() { votes++; }
};
int main()
{
cout << "Welcome to Student President Voting System!!!" << endl;
Candidate allCandidates[100];
int totalVotes = 0;
// File pointer fstream fin; // Open an existing file
fstream fin;
fin.open("candidantes.txt", ios::in); // Read the Data from the file // as String Vector
vector <string> row;
string line, word, temp; int index = 0; // Following while loop will iterate for each line in the file
while (fin >> temp) {
row.clear(); // read an entire row and // store it in a string variable 'line'
getline(fin, line); // used for breaking words
string s(line); // read every column data of a row and // store it in a string variable, 'word'
while (getline(s, word, ' , '))
{ // adding the splitted words to row
row.push_back(word);
} allCandidates[index] = Candidate(row[0], stoi(row[1])); totalVotes += stoi(row[1]); index++;
}
string name = ""; cout << "\nPlease enter the name of the candidante you want to vote : ";
getline(cin, name); int cand_no = -1; string userChoice; int i = 0; //Now we find the candidante with the same inputted name
while (i < index) {
if (allCandidates[i].getName() == " " + name) {
cand_no = i; cout << "Do you want to vote this candidante [y/n] : ";
cin >> userChoice; //After finding the candidate just ask the user to vote the candidante
if (userChoice == "y") { //to vote just call the member method that increments the vote count
allCandidates[cand_no].vote_this_candidate(); totalVotes++; cout << endl << "You successfully voted to " << name << " Thanks for voting!!!" << endl;
}
else { cout << "You didn't vote!!!" << endl; } break;
}
i++;
} if (cand_no == -1) {
cout << "Candidante not found!!! Do you like to add this candidate [y/n]: ";
cin >> userChoice; if (userChoice == "y") { allCandidates[index + 1] = Candidate(name, 1); totalVotes++; index++; }
}
//To show top five candidates we first sort the array with lambda
std::sort(allCandidates, allCandidates + 10, [](Candidate a, Candidate b) -> bool { return a.getVotes() > b.getVotes(); });
//then we show only first five candidates
cout << endl << "These are top 5 candidantes so far : " << endl;
for (int i = 0; i < 5; i++)
{
cout << i + 1 << ","; allCandidates[i].get_details();
} cout << endl << "Total studnets voted: " << totalVotes;
}

Answer 1

Problem is here:
string s(line);
while (getline(s, word, ' , '))
because getline has no overload that takes a std::string as its first parameter.
However, there is an overload that takes a stringstream, so you can do:
stringstream ss(line);
while (getline(ss, word, ' , '))
Also, ' , ' won't do what you think. Perhaps you meant ','.
Finally, int votes = 0; in your Candidate() constructor should just be votes = 0;. As it is, you are just declaring, initialising and then discarding a local variable.

Answer 2

The problem is that the compiler is telling you that the parameters you've given don't match a definition of the function. In your case I believe the problem is that you've given it 3 characters instead of 1 in the character portion (remember, a space is also a character). Try changing ' , ' to ','