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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. template <int N>
  5. void f();
  6.  
  7. template <>
  8. void f<0>()
  9. {
  10. 	printf("f<0>");
  11. }
  12.  
  13. template <>
  14. void f<1>()
  15. {
  16. 	printf("f<1>");
  17. }
  18.  
  19. void call_f(int i)
  20. {
  21.     switch(i)
  22.     {
  23.         case 0:
  24.             f<0>();
  25.             break;
  26.         case 1:
  27.             f<1>();
  28.             break;
  29.         default:
  30.             // invalid i, report error
  31.             break;
  32.     }
  33. }
  34.  
  35. int main() {
  36. 	f<0>();
  37. 	f<1>();
  38. 	// f<2>(); // compile error
  39.  
  40.     call_f(0);
  41.     call_f(1);
  42.     call_f(2); // runtime error
  43. 	return 0;
  44. }
Success #stdin #stdout 0s 3340KB
comments (?)
stdin
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Standard input is empty
stdout
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f<0>f<1>f<0>f<1>
https://ideone.com/PE1KY1
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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