How can I use cout << myclass

Question

myclass is a C++ class written by me and when I write:

myclass x; cout << x; 

How do I output 10 or 20.2, like an integer or a float value?

Answer 1

Typically by overloading operator<< for your class:

struct myclass {      int i; };  std::ostream &operator<<(std::ostream &os, myclass const &m) {      return os << m.i; }  int main() {      myclass x(10);      std::cout << x;     return 0; }