#include <iostream> #include <fstream> #include <string> #include <algorithm> #include <iterator> using namespace std; // egyet balról, egyet jobbról: struct zipp { zipp() : flag(true) { } bool operator()(const string& s1, const string& s2) { flag = !flag; return flag; } bool flag; }; int main() { ifstream if1("file1.txt"); ifstream if2("file2.txt"); merge( istream_iterator<string>(if1), istream_iterator<string>(), istream_iterator<string>(if2), istream_iterator<string>(), ostream_iterator<string>(cout,"\n"), zipp() ); return 0; }