ex29.cpp

/*
CPSC 121-0X
Paul De Palma
depalma
Example 29 
*/

//local variables 

#include <iostream>
using namespace std;

void shift(int,int);

int main()
{
 int var1 = 10, var2 = 20;

 cout << "variable var1 holds " << var1 << endl; 
 cout << "variable vari2 holds " << var2 << endl; 

 shift(var1,var2);

 cout << "Returned from function" << endl;

 cout << "variable var1 holds " << var1 << endl; 
 cout << "variable vari2 holds " << var2 << endl; 
 return 0;
}

/*
Pre:  Both parameters are ints and have been initialized
Post: Nothing is changed in the calling function because
      the parameters are local to shift
*/
void shift(int var1, int var2)
{
 int buf;

 buf = var1;
 var1 = var2;
 var2 = buf;
}