C++ program to find Reverse of a Number using class

Reverse of a Number using class


Write a C++ program to find Reverse of a Number using class. Here’s simple C++ program to find reverse of number by defining functions outside class in C++ Programming Language.


What are Functions ?


Function is a block of statements that performs some operations. All C++ programs have at least one function – function called “main()”. This function is entry-point of your program.

A function declaration tells the compiler about a function’s name, return type, and parameters. A function definition provides the actual body of the function.


Defining a Function : :


The general form of a C++ function definition is as follows:

return_type Function_Name( list of parameters )
{
//function’s body
}

  • return_type : suggests what the function will return. It can be void, int, char, some pointer or even a class object.
  • Function_Name : is the name of the function, using the function name it is called.
  • Parameters : are variables to hold values of arguments passed while function is called. A function may or may not contain parameter list.
  • Function body : is he part where the code statements are written.

Below is the source code for C++ program to find Reverse of a Number using class which is successfully compiled and run on Windows System to produce desired output as shown below :


SOURCE CODE : :


/*  C++ program to find Reverse of a Number using class  */

#include<iostream>
using namespace std;

class rev
{
	private:
			int n,n1,rn=0,d;
	public:
		void input();
		void calc();
		void display();
};

void rev::input()
{
	cout<<"\nEnter any positive no. :: ";
	cin>>n;
}

void rev::calc()
{
	n1=n;
	while(n>0)
	{
		d=n%10;
		rn=(rn*10)+d;
		n/=10;

	}
}

void rev::display()
{
		cout<<"\nReverse of [ "<<n1<<" ] is :: "<<rn<<"\n";
}

int main ()
{
	rev r;
	r.input();
	r.calc();
	r.display();

	return 0;

}

OUTPUT : :


/*  C++ program to find Reverse of a Number using class  */

Enter any positive no. :: 12345

Reverse of [ 12345 ] is :: 54321

Process returned 0

Above is the source code for C++ program to find Reverse of a Number using class which is successfully compiled and run on Windows System.The Output of the program is shown above .

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