Exer08_10.cpp

#include <iostream>
#include <fstream>
#include <sstream>
#include <string>
#include <vector>
using std::cout;
using std::cerr;
using std::endl;
using std::ifstream;
using std::istringstream;
using std::string;
using std::vector;
int main(int argc, char *argv[])
{
    if(argc != 2)
    {
        cerr << "Wrong input!" << endl;
        return -1;
    }
    ifstream input(argv[1]);
    string line, stmp;
    vector<string> text;
    while(getline(input, line))
    {
        text.push_back(line);
    }
    for(const auto &s : text)
    {
        istringstream is(s); // element in text is a line of string, not a word
        while(is >> stmp) // read each word in a line
        {
            cout << stmp << " "; // output each word
        }
        cout << endl; // this way the output is the completely the same as the input file
    }
    return 0;
}