Worksheet W.A.7.1                                                                  Name  _______________________

PARAMETERS

Predict the output of this program:

// parameters.cpp

// A short program to test understanding of parameter passing

#include <iostream.h>

void one (int, int);

void two (int &, int &);

void three (int &, int &);

void print (const int &, const int &);

main ()

{

int a = 2, b = 5;

print (a,b);

one (a,b);

print (a,b);

two (a,b);

print (a,b);

three (a,a);   // unusual call

print (a,b);

return 0;

}

void one (int s, int t)

{

s *= 2;

t += s;

print (s,t);

}

void two (int &g, int &h)

{

g *= 2;

h += g;

}

void three (int &c, int &d)

{

c *= 2;

d *= 2;

}

void print (const int &num1, const int &num2)

{

      cout << num1 << "   " << num2 << endl;

}