Object-Oriented-Programming-Lab/reference.cpp at main · rahulkumarjhamtani/Object-Oriented-Programming-Lab · GitHub

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#include<iostream>
using namespace std;

void swap_v(int,int);
void swap_a(int*,int*);
void swap_r(int&,int&);

int main()
{
	int a = 10,b=20;

	cout << "Before swap using call by value" << endl;
	cout << "a = " << a << endl << "b = " << b << endl;
	swap_v(a,b);
	cout << "After swap using call by value" << endl;
	cout << "a = " << a << endl << "b = " << b << endl;

	a=10;
	b=20;

	cout << "Before swap using call by address" << endl;
	cout << "a = " << a << endl << "b = " << b << endl;
	swap_a(&a,&b);
	cout << "After swap using call by address" << endl;
	cout << "a = " << a << endl << "b = " << b << endl;

	a=10;
	b=20;

	cout << "Before swap using call by reference" << endl;
	cout << "a = " << a << endl << "b = " << b << endl;
	swap_r(a,b);
	cout << "After swap using call by reference" << endl;
	cout << "a = " << a << endl << "b = " << b << endl;

	return 0;
}

void swap_v(int x, int y)
{
	int temp;
	temp = x;
	x = y;
	y = temp;
}

void swap_a(int *x, int *y)
{
	int temp;
	temp = *x;
	*x = *y;
	*y = temp;
}

void swap_r(int &x, int &y)
{
	int temp;
	temp = x;
	x = y;
	y = temp;
}