Question

How to get the address of a variable in C++

Answer 1

#include <iostream>

int main() {
    int n = 9;
     
    int* address_of_n = &n;
     
    std::cout << address_of_n << "\n";
    std::cout << &n;
}




/*
run:

0x7ffc21d4f88c
0x7ffc21d4f88c

*/

 

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Answer 2

#include <iostream>
#include <memory>

int main() {
    int n = 9;
      
    int* address_of_n = std::addressof(n);
      
    std::cout << address_of_n << "\n";
    std::cout << &n;
}
 
 
 
 
/*
run:
 
0x7ffcc40acb3c
0x7ffcc40acb3c
 
*/

 

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