C++ Program to convert a decimal number into binary with friend function

April 23, 2020 Prof. Fazal Rehman Shamil C++ Leave a comment

Write a program in C++ to convert a decimal number into binary without using an array with a friend function.

If we declare a function friend int show(T4Tutorials_Decimal_Number); as a friend in a class T4Tutorials_Decimal_Number then this function friend int show(T4Tutorials_Decimal_Number); can access the private and protected members of the class T4Tutorials_Decimal_Number. You must know that a global function can also be declared as a friend function of the class.

Syntax of friend function in C++

class class_name
{
…
friend return_type function_name(arguments);
…
}

#include <iostream>
using namespace std;
class T4Tutorials_Decimal_Number
{     
    protected:
    		int i=1,j=n,n,  binaryn=0;
    public:
    	T4Tutorials_Decimal_Number()
    	{
    		cout<<" enter  Decimal  Number :";
		    cin>>n;
		    for(j=n;j>0;j=j/2)
				{
					binaryn=binaryn+(n%2)*i;
					i=i*10;
					n=n/2;
				}
		}
		friend int show(T4Tutorials_Decimal_Number);
	};
	int show(T4Tutorials_Decimal_Number A)
	{
	       	cout<<"binary number ="<<A.binaryn<<endl;
		}
		int main()
		{ 
		  T4Tutorials_Decimal_Number A;
		  show(A);
	}

#include <iostream>

using namespace std;

class T4Tutorials_Decimal_Number

{

protected:

int i=1,j=n,n, binaryn=0;

public:

T4Tutorials_Decimal_Number()

{

cout<<" enter Decimal Number :";

cin>>n;

for(j=n;j>0;j=j/2)

{

binaryn=binaryn+(n%2)*i;

i=i*10;

n=n/2;

}

friend int show(T4Tutorials_Decimal_Number);

};

int show(T4Tutorials_Decimal_Number A)

{

cout<<"binary number ="<<A.binaryn<<endl;

}

int main()

{

T4Tutorials_Decimal_Number A;

show(A);

}

Output

enter Decimal Number: 9

1001

Author
Recent Posts

Prof. Fazal Rehman Shamil

CEO @ T4Tutorials.com
I welcome to all of you if you want to discuss about any topic. Researchers, teachers and students are allowed to use the content for non commercial offline purpose. Further, You must use the reference of the website, if you want to use the partial content for research purpose.

Latest posts by Prof. Fazal Rehman Shamil (see all)

List of Public service commissions - August 31, 2020
Comparison of fee structure of Pakistani Universities - June 1, 2020
Past Guess Paper of Auditing - May 12, 2020