Ch7_swap.cpp

#include<iostream>
#include<string>

using namespace std;

void swap( int &v1, int &v2 )
{
    int tmp = v2;
    v2 = v1;
    v1 = tmp;
}
void flip(int* p1, int* p2 )
{
    int temp = *p2;
    *p2 = *p1;
    *p1 = temp;
}

int main()
{
    int i = 10;
    int j = 20;
    cout << "Before swap():\ti: "<< i << "\tj: " << j << endl;
    swap( i, j );
    cout << "After swap():\ti: "<< i << "\tj: " << j << endl;
    flip( &i, &j );
    cout << "After flip():\ti: "<< i << "\tj: " << j << endl;
    return 0;
}