swap2.cc From Astrachan pp 537-538
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#include <iostream.h>
#include "clockt.h"
#include "CPstring.h"

// illustrates use of template functions
// Owen Astrachan, 10/11/94

template <class Type>
void Swap(Type & a, Type & b)
// generic swap routine     
{
    Type temp;
    temp = a;
    a = b;
    b = temp;
}

int main()
{
    int i1 = 1, i2 = 2;
    double d1 = 3.1415, d2 = 2.718;
    ClockTime c1(1,2,3), c2(4,5,6);
    char ch1 = 'a', ch2 = 'b';
    string s1 = "hello", s2 = "world";
    
    Swap(i1, i2);
    Swap(d1,d2);
    Swap(c1,c2);
    Swap(ch1,ch2);
    Swap(s1,s2);

    cout << i1 << " " << i2 << endl;
    cout << d1 << " " << d2 << endl;
    cout << c1 << " " << c2 << endl;
    cout << ch1 << " " << ch2 << endl;
    cout << s1 << " " << s2 << endl;
    return 0;
}