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ex10_33.cpp
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ex10_33.cpp
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//
// ex10_33.cpp
// Exercise 10.33
//
// Created by pezy on 12/13/14.
//
// Write a program that takes the names of an input file and two output files.
// The input file should hold integers. Using an istream_iterator read the input file.
// Using ostream_iterators, write the odd numbers into the first output file.
// Each value should be followed by a space.Write the even numbers into the second file.
// Each of these values should be placed on a separate line.
//
// Run: ./a.out "../data/input.txt" "../data/odd.txt" "../data/even.txt"
#include <fstream>
#include <iterator>
#include <algorithm>
int main(int argc, char **argv)
{
if (argc != 4) return -1;
std::ifstream ifs(argv[1]);
std::ofstream ofs_odd(argv[2]), ofs_even(argv[3]);
std::istream_iterator<int> in(ifs), in_eof;
std::ostream_iterator<int> out_odd(ofs_odd, " "), out_even(ofs_even, "\n");
std::for_each(in, in_eof, [&out_odd, &out_even](const int i){
*(i & 0x1 ? out_odd : out_even)++ = i;
});
return 0;
}