code. compile. run. debug. share.
/******************************************************************************
Welcome to code of Lập trình - Điện tử
Series: C++
Author: Nghĩa Taarabt
*******************************************************************************/
#include <iostream>
using namespace std;
// global variable
int num;
// function declaration
int& test();
int main()
{
// assign 5 to num variable
// equivalent to num = 5;
test() = 5;
cout << num;
return 0;
}
// function definition
// returns the address of num variable
int& test()
{
return num;
}
Compiling Program...
Standard Input:
Interactive Console
Text
Program is not being debugged. Click "Debug" button to start program in debug mode.
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