Question

Please answer in C++ Thanks! Use an istream_iterator, the copy algorithm and a back_inserter to read the contents of a text file that contains int values separated by whitespace. Place the int values into a vector of ints. The first argument to the copy algorithm should be the istream_iterator object that's associated with the text file's ifstream object. The second argument should be the istream_iterator object that's initialized using the class template istream_iterator's default constructor-- the resulting object can be used as an "end" iterator. After reading the file's contents, display the contents of the resulting vector.

Answer 1

Implemetation of above program in C++

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Program.cpp

// Incliding needed standard libraries

// You can use <bits/stdc++.h> to inclue all libraries without one by one.

#include <iostream>
#include <vector>
#include <algorithm>
#include <iterator>
#include <fstream>

using namespace std;

int main()
{
std::vector< int > showVector; //Making a vector

std::ifstream inputFile("E:/a.txt", std::ios::in); // Reading a.txt from location E:/a.txt

std::istream_iterator<int> inputFromFile(std::cin); // istream_iterator, you can use inputFile on the place of std::cin

   // Copy file content to vector list
std::copy(inputFromFile, std::istream_iterator< int >(),back_inserter(showVector ));

for ( int i=0;i<showVector.size(); i++) // Until size of vector
std::cout << showVector[i] << "\t"; // Printing Result

std::cout << std::endl;

return 0;
}

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