C++ program to swap two numbers by call by reference.

by Bikash Chandra Prusty · September 15, 2015

#include<iostream>
using namespace std;
void swap(int &,int &);
int main()
{
	int a,b;
	cout<<"Enter Value Of A:";
	cin>>a;
	cout<<"Enter Value of B:";
	cin>>b;
	cout<<"Before swapping\nValue of A is "<<a<<"\nValue of B is "<<b;
	swap(a,b);
	cout<<"\nOutside function a0fter swapping\nValue of A is"<<a<<"\nValue of B is"<<b; 
}
void swap(int &a,int &b)
{
	int c;
	c=a;
	a=b;
	b=c;
	cout<<"\nInside function after swapping\nValue of A is"<<a<<"\nValue of B is"<<b;
}

#include<iostream>

using namespace std;

void swap(int &,int &);

int main()

{

int a,b;

cout<<"Enter Value Of A:";

cin>>a;

cout<<"Enter Value of B:";

cin>>b;

cout<<"Before swapping\nValue of A is "<<a<<"\nValue of B is "<<b;

swap(a,b);

cout<<"\nOutside function a0fter swapping\nValue of A is"<<a<<"\nValue of B is"<<b;

}

void swap(int &a,int &b)

{

int c;

c=a;

a=b;

b=c;

cout<<"\nInside function after swapping\nValue of A is"<<a<<"\nValue of B is"<<b;

}

Sample Input
Enter Value Of A:127
Enter Value of B:445
Sample Output
Before swapping
Value of A is 127
Value of B is 445
Inside function after swapping
Value of A is445
Value of B is127
Outside function a0fter swapping
Value of A is445
Value of B is127

C++ program to swap two numbers by call by reference.

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C++ program to swap two numbers by call by reference.

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