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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. template<class D>
  5. class Base {
  6. public:
  7.     D a;
  8.  
  9.     void doWork(D b) {
  10.         a += b;
  11.     }
  12. };
  13.  
  14. class DerA : public Base<int> {
  15.     // Make "a" an int
  16. };
  17.  
  18. class DerB : public Base<float> {
  19.  
  20. };
  21.  
  22.  
  23. int main() {
  24.  
  25.     DerA obj1;
  26.     DerB obj2;
  27.  
  28.     obj1.a = 22;
  29.     obj2.a = 2.2f;
  30.  
  31.     obj1.doWork(11);
  32.     obj2.doWork(1.1f);
  33.  
  34.     cout << obj1.a << endl;
  35.     cout << obj2.a;
  36.  
  37.     return 0;
  38. }
Success #stdin #stdout 0s 3296KB
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33
3.3
https://ideone.com/O1s2yp
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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