calling function into main.

[Bluexorcist]

hi i cant figure out how to call a function into main
this is the function-
im passing a vector over to this function and then trying to call it in main
void sortfile(const std::vector<std::string>& lines)

any help is appreciated thanks

[Thomas1965]

#include <iostream>

#include <vector>
#include <string>

void sortfile(const std::vector<std::string>& lines);

int main()
{
  std::vector<std::string> lines = {"Debbie", "Anna", "Lisa", "Kathy"};

  // calling the sort function
  sortfile(lines);
  system("pause");
  return 0;
}

Be aware that you can't sort a const vector

[Bluexorcist]

#include "stdafx.h"
#include <iostream>
#include <algorithm>
#include <fstream>
#include <vector>
#include <string>
#include<iterator>

void loadfile()
{
	std::ifstream file("weblog.txt");
	if (file.is_open())
	{
		std::cout << "File found!" << std::endl;
	}
	else std::cout << "File NOT found!" << std::endl;
	std::vector<std::string> lines;
	std::string loading;

	while (std::getline(file, loading))
	{
		lines.push_back(loading);
	}
	
}

void sortfile(std::vector<std::string>& lines)
	{
	
		std::sort(lines.begin(), lines.end());
		std::ofstream NewLog("SortedWeblog.txt");
		for (int i = 0; i < lines.size(); i++)
		{
			NewLog << lines[i] << std::endl;
		}
	}


int main()
{
	loadfile();
	std::vector<std::string> lines;
	std::string loading;
	lines.push_back(loading);
	sortfile(lines);
	system("pause");
	return 0;
}

ok im getting a blank text file...i had it working using only one function but i cant do that, need to use two functions

this whole thing is supposed to take in a text file,put it in a vector, sort it and then write the sorted files into a text file

[Thomas1965]

You should pass the vector to the loadfile function. At the moment you read the file into a temp variable that gets lost when the function ends.

[Bluexorcist]

thanks! that worked