Armstrong Number | C-Program

About Armstrong number: 

1. Write a C-program to print Armstrong number up to 1000:

Code:

#include<stdio.h>

void main()

{
    int i,j,k,s;

    printf("The amstrong number are:\n");

    for(i=1;i<=1000;i++)

        {
            j=i;

            s=0;

            while(j!=0)

            {
                k=j%10;

                s=s+k*k*k;

                j=j/10;
            }

            if(s==i)

                printf("%d\n",i);
        }

}

Output:

 

2. Write a C-Program to Check the number is Armstrong number or not: 

Code:

#include<stdio.h>

void main()

{

    int n,a,b=0,m;

    printf("Enter a number:\n");

    scanf("%d",&m);

    n=m;

    while(n!=0)

    {

        a=n%10;

        n=n/10;

        b=b+a*a*a;

    }

    if(b==m)

        printf("\nArmstrong number!!");

    else

        printf("Not Armstrong number!!");

}

Output: