Armstrong Number!

A number is said to be a Armstrong number if it is equal to the sum of the cube of its digits.

Some examples of Armstrong numbers are:

• 153
• 1
• 370
• 407

Explanation of 1st example:

153 = 1³ + 5³ + 3³

NOTE : 0 is a Armstrong number because 0³ = 0.

Now here’s we come to the coding part. I am writing the function to check whether a given number is a Armstrong number or not.

In Python:

def Armstrong_number(x):
    res = 0
    copy = x
    while x != 0:
        res += (x % 10) ** 3
        x = x // 10
    return res == copy

In C:

void Armstrong_numbers(int x)
{
    int res = 0, copy = x;
    while(x != 0)
    {
        res = res + ((x % 10)*(x % 10)*(x % 10));
        x = x / 10;
    }
    if (res == copy)
    {
        printf("Armstrong number");
    }
    else
    {
        printf("Not a Armstrong number");
    }
}

Happy Coding!