C++ Program to check whether a number is Armstrong or not

 

C++ Program to check whether a number is Armstrong or not

Given a number , write a program to check that given number is Armstrong or not . So for that first we have to know that what is Armstrong number .

What is Armstrong number:-  Click here   

Sample input

153

Sample output

Armstrong number 

C++ Program to check whether a number is Armstrong or not

The objective of the code is to check whether a number is Armstrong or not .

Code(C++):-

#include <iostream>

using namespace std;

int main()

{

int n,n1,n2,r,s=1,sum=0; //r=reminder

cout<<"Enter a number";

cin>>n;

n1=n;

n2=n;

while(n!=0)

{

r=n%10;

n=n/10;

while(n1!=0)

{

s=s*r;

n1=n1/10;

}

sum=sum+s;

s=1;

n1=n2;

}

if(sum==n2)

cout<<"number is Armstrong";

else

cout<<"number is not Armstrong";

return 0;

}

Output:-

Enter a number

153

number is Armstrong

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