Write a program to swap two numbers using pointers.

Write a C++ Program to Swap Two Numbers using Pointers.

 

Object:

Write a program to swap two numbers using pointers. C++ Projects.

Code:

#include<iostream>
#include<conio.h>

using namespace std;
void main()
{
int num1, num2, temp;
int *p1,*p2;
cout<<“Enter Two Numbers.”<<endl;
cout<<“Enter value of a : “;
cin>>num1;
cout<<“Enter value of b : “;
cin>>num2;
p1=&num1;
p2=&num2;
cout<<“\nBefore Swapping two Numbers.\n”;
cout<<“Value of a is : “<<*p1<<endl;
cout<<“Value of b is : “<<*p2<<endl;
//swap
temp = *p1;
*p1 = *p2;
*p2 = temp;
cout<<“\nAfter swapping two Numbers.\n”;
cout<<“Value of a is : “<<*p1<<endl;
cout<<“Value of b is : “<<*p2<<endl;

getch();
}

#include<iostream>
#include<conio.h>

using namespace std;
void main()
{
	int num1, num2, temp;
	int *p1,*p2;
	cout<<"Enter Two Numbers."<<endl;
	cout<<"Enter value of a : ";
	cin>>num1;
	cout<<"Enter value of b : ";
	cin>>num2;
	p1=&num1;
	p2=&num2;
	cout<<"\nBefore Swapping two Numbers.\n";
	cout<<"Value of a is : "<<*p1<<endl;
	cout<<"Value of b is : "<<*p2<<endl;
	//swap
	temp = *p1;
	*p1 = *p2;
	*p2 = temp;
	cout<<"\nAfter swapping two Numbers.\n";
	cout<<"Value of a is : "<<*p1<<endl;
	cout<<"Value of b is : "<<*p2<<endl;
	
	getch();
}

Output:

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