book_read.cxx

#include <iostream>
#include <algorithm>
#include <fstream>
#include <string>
#include <vector>
#include <sstream>
#include <utility>


int main()
{
    std::string input_file_name;
    std::cout << "\n Enter complete file path(with name): ";
    std::getline(std::cin, input_file_name);
    std::fstream inFile(input_file_name, std::ios::in);
    if (!inFile.good())
        std::cout << "\n File not found.";

    std::vector<std::pair<int,int>> books;
    while(inFile) {
        std::string line;
        std::getline(inFile,line);
        std::stringstream ss(line);
        int book_id, score;

        ss >> book_id >> score;
        books.push_back(std::make_pair(book_id,score));
    }
    inFile.close();

    std::for_each(books.begin(), books.end(),  [](std::pair<int,int> x) {
        std::cout << "\n Book ID:" << x.first << " Score: " << x.second; });
}