Output is just a little off

[sdcplus]

I've been trying to troubleshoot one of my functions and during my output I get some letters in between my words. I am using a file and the first line reads:
Whether a translation of HOMER may be best executed in blank verse or

I am not sure what to do to fix this function, the function in question is the extract_word function.

  #include <fstream>
#include <iostream>
#include <iomanip>
#include <cctype>

using namespace std;

bool read_line(ifstream &fin, char line[]);
bool extract_word(char line[], char temp[], int &index);

int main()
{
	int k = 0;
	ifstream fin;
	ofstream fout;

	char line[100] = { " " };
	int index = 0;
	char temp[30] = { " " };

	fin.open("other.txt");
	fout.open("output.txt");

	bool readline = true;
	bool word = true;
	while (readline == true)
	{
		readline = read_line(fin, line);
		index = 0;

		while (word == true)
		{
			word = extract_word(line, temp, index);
			cout << temp << endl;
			for (k = 0; k < 30; k++)
			{
				temp[k] = '\0';
			}
		}
	

		cout << temp << " ";
	}

	if (readline == false)

	{
		cout << " end of file";
	}

	fout << line;
}

bool read_line(ifstream &fin, char line[])
{

	while (!fin.eof())
	{
		fin.getline(line, 100);
		return true;
	}
	return false;
}

bool extract_word(char line[], char temp[], int &index)

{
	int i = 0;
	int j = 0;
	int k = 0;
	bool check = true;
	
	if (!isalpha(line[index]))
	{
		return false;
	}
	cout << line[index + 1] << endl;
	while(isalpha(line[index]))
	{
			temp[i] = line[index];
			i++;
			index++;
	}
	check = true;
	int checker = 0;
	checker = index;
		for (j = 1; !isalpha(line[checker - j]) ; j++)
		{
			
				temp[checker - j] = '\0';

		}
		index++;
	return check;
}

[ne555]

> during my output I get some letters in between my words.
perhaps you may want to consider to get rid of line 77.