fork download 
  1. #include <iostream>
  2.  
  3. class C {
  4. private:
  5.   int n;
  6. public:
  7.   C() {}
  8.   C(const C &ob) { this->n = ob.n; }
  9.   C(const int n) { this->n = n; }
  10.   ~C(){}
  11.   C &operator=(const C &ob) { this->n = ob.n; return *this; }
  12.   friend bool operator==(C const &a,  C const &b) { return (a.n == b.n); }
  13.   friend std::ostream &operator<<(std::ostream &stream, C const &ob) { stream << ob.n; return stream; }
  14.   friend C operator+(C const &a, C const &b) { C c; c.n = a.n + b.n; return c; }
  15.  
  16.   C operator+=(C const &ob) {*this = *this + ob; return *this; }
  17. };
  18.  
  19.  
  20. int main() {
  21.   C s = 0;
  22.   for (int n = 1; n <= 10; n++)
  23.     s += n;
  24.   std::cout << s << std::endl;
  25.  
  26.   s = 0;
  27.   for (int n = 1; n <= 100; n++)
  28.     s = n + s;
  29.   std::cout << s << std::endl;
  30.  
  31.   std::cout << (2 == s) << std::endl;
  32.   return 0;
  33. }
  34. /* end */
  35.  
Success #stdin #stdout 0s 15240KB
comments (?)
stdin 
Standard input is empty
stdout 
55
5050
0
https://ideone.com/SUSTBj
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!