fork download
copy 
  1. #include <iostream>
  2. using namespace std;
  3.  
  4.  
  5. class MyVector
  6. {
  7. public:
  8.     double x, y, z;
  9.     MyVector& operator *= (double c)
  10.     {
  11.         x *= c;
  12.         y *= c;
  13.         z *= c;
  14.         return *this;
  15.     }
  16. };
  17.  
  18. MyVector operator*(const MyVector &v, double c) {
  19.   MyVector temp(v);
  20.   temp *= c;
  21.   return temp;
  22. }
  23.  
  24. MyVector operator*(double c, const MyVector &v) {
  25.   return v*c; // using MyVector operator*(const MyVector &v, double c)
  26. }
  27.  
  28. ostream& operator<<(ostream&os, const MyVector& v) {
  29.   return os << '{' << v.x << ',' << v.y << ',' << v.z  << '}';
  30. }
  31.  
  32. int main() {
  33. 	MyVector v; v.x=1; v.y=2; v.z=3;
  34.  
  35.     MyVector v1 = v*2;
  36.     cout << v1 << endl;
  37.     MyVector v2 = 2*v;
  38.     cout << v2 << endl;
  39. }
Success #stdin #stdout 0s 3296KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
{2,4,6}
{2,4,6}
https://ideone.com/ozFc6x
language:
C++ (gcc 8.3)
created:
11 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!