Question

How to use reference in C++

Answer 1

#include <iostream>
 
int main()
{
    int a = 7;
    int& ref = a;
    std::cout << a << " " << ref << '\n';
    
    ref = 2;
    std::cout << a << " " << ref;
}
      
      
      
      
/*
run:
    
7 7
2 2
       
*/

 

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