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C Program to Check Disarium Number

Posted in C Tutorial
Updated on Oct 06, 2024
By Mari Selvan
πŸ‘οΈ 58 - Views
⏳ 4 mins
πŸ’¬ 1 Comment
C Program to Check Disarium Number

Photo Credit to CodeToFun

πŸ™‹ Introduction

In the realm of programming, exploring mathematical patterns is a fascinating endeavor. One such numeric pattern is the Disarium number.

A Disarium number is a number defined by the sum of its digits each raised to the power of its respective position.

In this tutorial, we'll delve into a C program designed to check whether a given number is a Disarium number.

πŸ“„ Example

Let's explore the C code that checks whether a given number is a Disarium number.

isDisarium.c
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#include <stdio.h>
#include <math.h>

// Function to count the number of digits in a given number
int countDigits(int number) {
  int count = 0;
  while (number != 0) {
    count++;
    number /= 10;
  }
  return count;
}

// Function to check if a number is a Disarium number
int isDisarium(int number) {
  int originalNumber = number;
  int digitCount = countDigits(number);
  int sum = 0;

  while (number != 0) {
    int digit = number % 10;
    sum += pow(digit, digitCount);
    digitCount--;
    number /= 10;
  }

  return (sum == originalNumber);
}

// Driver program
int main() {
  // Replace this value with your desired number
  int inputNumber = 89;

  // Call the function to check if the number is Disarium
  if (isDisarium(inputNumber)) {
    printf("%d is a Disarium number.\n", inputNumber);
  } else {
    printf("%d is not a Disarium number.\n", inputNumber);
  }

  return 0;
}

πŸ’» Testing the Program

To test the program with different numbers, replace the value of inputNumber in the main function.

Output
89 is a Disarium number.

Compile and run the program to check if the number is a Disarium number.

🧠 How the Program Works

  1. The program defines a function countDigits to count the number of digits in a given number.
  2. The isDisarium function checks if a number is a Disarium number by summing the digits each raised to the power of its position.
  3. The main function tests the isDisarium function with a sample number (replace it with your desired number).

πŸ“ Between the Given Range

Let's dive into the C code that checks for Disarium numbers in the specified range.

isDisarium.c
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#include <stdio.h>
#include <math.h>

// Function to calculate the number of digits in a number
int countDigits(int num) {
  int count = 0;
  while (num != 0) {
    num /= 10;
    ++count;
  }
  return count;
}

// Function to check if a number is a Disarium number
int isDisarium(int num) {
  int originalNum = num;
  int digitCount = countDigits(num);
  int sum = 0;

  while (num != 0) {
    int digit = num % 10;
    sum += pow(digit, digitCount);
    num /= 10;
    --digitCount;
  }

  return (sum == originalNum);
}

// Driver program
int main() {
  printf("Disarium numbers in the range 1 to 100:\n");

  for (int i = 1; i <= 100; ++i) {
    if (isDisarium(i)) {
      printf("%d ", i);
    }
  }

  return 0;
}

πŸ’» Testing the Program

Output
Disarium numbers in the range 1 to 100:
1 2 3 4 5 6 7 8 9 89

Run the program to check for Disarium numbers in the range from 1 to 100.

🧠 How the Program Works

  1. The program defines a function countDigits that calculates the number of digits in a given number.
  2. It also defines a function isDisarium that checks if a number is a Disarium number.
  3. The main function iterates through numbers from 1 to 100 and prints the Disarium numbers in the specified format.

🧐 Understanding the Concept of Disarium Numbers

Before we dive into the code, let's grasp the concept of Disarium numbers.

A Disarium number is a number such that the sum of its digits, each raised to the power of its position, equals the number itself.

For example, the number 89 is a Disarium number because 8^1 + 9^2 equals 89.

πŸŽ‰ Conclusion

Understanding and implementing programs to identify numeric patterns, such as Disarium numbers, is a valuable skill in the world of programming.

The provided C program offers a practical example of checking whether a given number follows the Disarium pattern.

Feel free to use and modify this code for your specific use cases. Happy coding!

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Author

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πŸ‘‹ Hey, I'm Mari Selvan

For over eight years, I worked as a full-stack web developer. Now, I have chosen my profession as a full-time blogger at codetofun.com.

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Mari Selvan
Mari Selvan
10 months ago

If you have any doubts regarding this article (C Program to Check Disarium Number), please comment here. I will help you immediately.

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