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C/C++ Source or Header  |  2000-05-25  |  673 b   |  26 lines
  1. //: C21:PtrFun2.cpp
  2. // From Thinking in C++, 2nd Edition
  3. // Available at http://www.BruceEckel.com
  4. // (c) Bruce Eckel 1999
  5. // Copyright notice in Copyright.txt
  6. // Using ptr_fun() for two-argument functions
  7. #include <algorithm>
  8. #include <vector>
  9. #include <iostream>
  10. #include <functional>
  11. #include <cmath>
  12. using namespace std;
  13.  
  14. double d[] = { 01.23, 91.370, 56.661,
  15.   023.230, 19.959, 1.0, 3.14159 };
  16. const int dsz = sizeof d / sizeof *d;
  17.  
  18. int main() {
  19.   vector<double> vd;
  20.   transform(d, d + dsz, back_inserter(vd), 
  21.     bind2nd(ptr_fun(pow), 2.0));
  22.   copy(vd.begin(), vd.end(),
  23.     ostream_iterator<double>(cout, " "));
  24.   cout << endl;    
  25. } ///:~
  26.