swapusingreference.cpp

#include<iostream>
using namespace std;

class number
{
	public:
		void swap(int &,int &);
		void swap(float &,float &);
		void swap(char &,char &);	
};

void number::swap(int &a,int &b)
{
	int temp;
	
	temp=a;
	a=b;
	b=temp;
	cout << "\na = " << a << endl;
	cout << "b = " << b << endl;
}

void number::swap(float &a,float &b)
{
	float temp;
	
	temp=a;
	a=b;
	b=temp;
	cout << "\na = " << a << endl;
	cout << "b = " << b << endl;
}

void number::swap(char &a,char &b)
{
	char temp;
	
	temp=a;
	a=b;
	b=temp;
	cout << "\na = " << a << endl;
	cout << "b = " << b << endl;
}

int main()
{
	int ch;
	number num;
	cout << "Choose method of Swapping" << endl;
	cout << "1. Integer Swap" << endl << "2. Float Swap" << endl << "3. Character Swap" << endl << "4. Exit" << endl; 
	
	while(1)
	{
		cout << "Enter your choice : ";
		cin >> ch;
		
		switch(ch)
		{
			case 1:
				int a,b;
				cout << "a : ";
				cin >> a;
				cout << "b : ";
				cin >> b;
				num.swap(a,b);
				
				break;
			case 2:
				float c,d;
				cout << "a : ";
				cin >> c;
				cout << "b : ";
				cin >> d;
				num.swap(c,d);
				
				break;
			case 3:
				char x,y;
				cout << "a : ";
				cin >> x;
				cout << "b : ";
				cin >> y;
				num.swap(x,y);
				
				break;
			case 4:
				exit(0);
				break;
			default:
			 	cout << "Enter correct choice." << endl;
		}
	}
	
	return 0;
}