ptrfun2.cpp

Thingking in c++第二版

//: C05:PtrFun2.cpp
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 2000
// Copyright notice in Copyright.txt
// Using ptr_fun() for two-argument functions
#include <algorithm>
#include <vector>
#include <iostream>
#include <functional>
#include <cmath>
using namespace std;

double d[] = { 01.23, 91.370, 56.661,
  023.230, 19.959, 1.0, 3.14159 };
const int dsz = sizeof d / sizeof *d;

int main() {
  vector<double> vd;
  transform(d, d + dsz, back_inserter(vd), 
    bind2nd(ptr_fun(pow), 2.0));
  copy(vd.begin(), vd.end(),
    ostream_iterator<double>(cout, " "));
  cout << endl;    
} ///:~