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  1. #include <stdio.h>
  2.  
  3. template <typename T, void(*F)(T&)>
  4. void myforeach(T *p, int N)
  5. {
  6.     for(int i = 0; i < N; i++)
  7.     {
  8.         F(p[i]);
  9.     }
  10. }
  11.  
  12. template <int Y>
  13. void f(int &x)
  14. {
  15.     x = x * Y;
  16. }
  17.  
  18. int main()
  19. {
  20.     int a[10] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
  21.     myforeach<int, f<2>>(a, 10);
  22.     for(int i = 0; i < 10; i++)
  23.     {
  24.         printf("%d ", a[i]);
  25.     }
  26.     printf("\n");
  27.     return 0;
  28. }
  29.  
Success #stdin #stdout 0s 3296KB
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stdin
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Standard input is empty
stdout
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0 2 4 6 8 10 12 14 16 18
https://ideone.com/Oa0Qrj
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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