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  1. #include "iostream"
  2. using namespace std;
  3.  
  4. template<typename T>
  5. void change(T &a)
  6. {
  7.    T &x = a;
  8.     x = 10;
  9. }
  10. int main()
  11. {
  12.    long a=20;
  13.    cout << a << endl;
  14.    change<long>(a);
  15.    cout << a << endl;
  16.  
  17.  
  18.     printf("Hello World");
  19.     return 0;
  20. }
Success #stdin #stdout 0s 4536KB
comments (?)
stdin
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Standard input is empty
stdout
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20
10
Hello World
https://ideone.com/n1Qh07
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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