Keywords: address
This is for the readers who have basic c++ background. Those days I have noticed that there’s char ‘&’ in front of function. So decided to record it.
I suggest an online c++ compiler : (You can test your simple programs on it.)
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| #include <iostream>
#include <memory>
using namespace std;
int& fun(int &a)
{
cout << "aa " << &a <<endl;
return a;
}
int main()
{
int b;
cout << "b: " << &b <<endl;
b = 4;
cout << "fun: "<< &fun(b) << endl;
int a;
cout << "a: " << &a << endl;
a = fun(b);
cout << a << endl;
cout << &a << endl;
}
|
The result is :
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| b: 0x7ffe5ec356b8
fun: aa 0x7ffe5ec356b8
0x7ffe5ec356b8
a: 0x7ffe5ec356bc
aa 0x7ffe5ec356b8
4
0x7ffe5ec356bc
|
To be honest, & and * are too hard in c++.
