Let us understand what is an ArmstrongInteger Series and let us learn how we can implement Armstrong Number in C programming language.
What is an Armstrong Number Series?
An Armstrong number is the sum of cubes of the individual digits of the number. If the sum of the digits is equal to the number, then it is said to be an Armstrong Integer.
An Armstrong integer is similar to a narcissistic number. However, there’s a difference between an Armstrong number and narcissistic number.
An Armstrong integer is essentially a 3 digit number whereas a narcissistic number is a 4 or more than 4 digit number. It is also usually regarded as 4 digit Armstrong Number.
Armstrong Number Formula
153 = (1 * 1 * 1) + (5 * 5 * 5) + (3 * 3 * 3)
371 = (3 * 3 * 3) + (7 * 7 * 7) + (1 * 1 * 1)
Armstrong numbers are essentially 3 digit integers. However, if you intend to calculate 4 digit armstrong number in C programming, you need to check the narcissistic number c program.
Algorithm For Armstrong Number in C Programming
Armstrong Series Logic Explanation
- The input value is copied into a temporary variable.
- The last digit of the input value is extracted, cubed and added to the sum variable.
- The last digit is extracted till the input value is not equal to zero.
- After the process is completed and the remainder is zero, the sum variable is compared with the temporary variable.
- If the sum and temporary variables are equivalent, the input value is an Armstrong Number, else it is not an Armstrong Integer.
Note: This C program for Armstrong Numbers is compiled with GNU GCC compiler on Linux Ubuntu 14.04 operating system. However, these codes are compatible with all other operating systems.
Must Read: C Program To Check Palindrome Numbers
Method 1: C Program To Find Armstrong Numbers using While Loop
Must Read: Tribonacci Series C Program
Method 2: Generate Armstrong Numbers in C Programming using For Loop
Method 3: C Program To Check Armstrong Number using Function
Must Read: C Program To Check Strong Numbers
Let’s discuss more on Armstrong number in C programming in the comment section below if you have any compilation errors and any doubts about the same.
For more information on Armstrong series, check NCTM.