Passing Arguments

#include <iostream.h>

void main(){

 int Boys = 3, Girls = 5; 

void PassByValue(int males, int females);

 void Reference(int &m, int &f); 

void Pointers(int *u, int *v); 

cout << "At startup, within main()"; 
cout << "\n\tBoys  = " << Boys;

 cout << "\n\tGirls = " << Girls; 

cout << "\nPassing arguments by value = Copy";

 PassByValue(Boys, Girls);

 cout << "\nAfter calling PassByValue(), within main()";

 cout << "\n\tBoys  = " << Boys;

 cout << "\n\tGirls = " << Girls;

 cout << "\nPassing arguments by reference"; 

Reference(Boys, Girls); 

cout << "\nAfter calling Reference(), within main()";

 cout << "\n\tBoys  = " << Boys;

 cout << "\n\tGirls = " << Girls; 

cout << "\nPassing arguments pointers";

 Pointers(&Boys, &Girls);

 cout << "\nAfter calling Pointers(), within main()"; 

cout << "\n\tBoys  = " << Boys; 

cout << "\n\tGirls = " << Girls;

 cout << "\n";}

void PassByValue(int b, int g)

{ b += 3, g += 4; 

cout << "\nWithin PassByValue(), now"; 

cout << "\n\tBoys  = " << b; 

cout << "\n\tGirls = " << g;}

void Reference(int &b, int &g)
{ b = b + 8, g = g + 5;

 cout << "\nWithin Reference(), now";

 cout << "\n\tBoys  = " << b;

 cout << "\n\tGirls = " << g;}

void Pointers(int *b, int *g){ 

*b = 44, *g = 52; 

cout << "\nWithin Pointers(), now";

 cout << "\n\tBoys  = " << *b;

 cout << "\n\tGirls = " << *g;}