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  1. #include <iostream>
  2. #include <algorithm>
  3. #include <vector>
  4. #include <set>
  5. using namespace std;
  6.  
  7. class A {
  8.     int a;
  9. public:
  10.     A(int a) : a(a) {}
  11.     int getA() const { return a; }
  12.     void setA(int a) { this->a = a; }
  13.     bool operator<(const A & b) const { return a<b.a; }
  14. };
  15.  
  16. struct myprinter { 
  17.     void operator()(const A & a) { cout << a.getA() << ", "; }  
  18. };
  19.  
  20. struct doubler {
  21.     void operator()(A& a) { a.setA(a.getA()*2); }
  22. };
  23.  
  24. int main() {
  25.     int mynumbers[] = {8, 9, 7, 6, 4, 1};
  26.     vector<A> s1(mynumbers, mynumbers+6);
  27.     std::sort(s1.begin(), s1.end());
  28.     for_each(s1.begin(), s1.end(), doubler());
  29.     for_each(s1.begin(), s1.end(), myprinter());
  30.     return 0;
  31. }
Success #stdin #stdout 0s 3468KB
comments (?)
stdin 
Standard input is empty
stdout 
2, 8, 12, 14, 16, 18,
https://ideone.com/1f3Dln
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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