#include <iostream>
using namespace std;

int i;

void func1(int parm1)
{
    parm1 = 111;
    cout << "In func1: parm1 = " << parm1 << endl;
}

void func2(int& parm2)
{
    parm2 = 222;
    cout << "In func2: parm2 = " << parm2 << endl;
    cout << "In func2:     i = " << i     << endl;
}

int main()
{
    i = 0;
    cout << "In main before call to func1: i = " << i << endl;
    cout << endl;

    func1(i);
    cout << "In main after call to func1: i = " << i << endl;
    cout << endl;

    func2(i);
    cout << "In main after call to func2: i = " << i << endl;
}