w3resource

C Exercises: Find the difference between the largest integer and the smallest integer created by 8 numbers from 0 to 9

C Basic Declarations and Expressions: Exercise-143 with Solution

Write a C program to find the difference between the largest integer and the smallest integer, which are created by 8 numbers from 0 to 9. The number that can be rearranged shall start with 0 as in 00135668.

Input:
Data is a sequence of 8 numbers (digits from 0 to 9).
Output:
The difference between the largest integer and the smallest integer.

Sample Solution:

C Code:

#include<stdio.h>

int main() {
  int max_val, min_val, k, d, t;

  // Prompt user to input an integer created by 8 numbers (0 to 9)
  printf("Input an integer created by 8 numbers (0 to 9):\n");
  scanf("%d", &d);

  int i, j, s[8] = {0};

  // Extract individual digits and store them in array s
  for (i = 0; d != 0; i++) {
    s[i] = d % 10;
    d /= 10;
  }

  // Sort the digits in descending order
  for (i = 0; i < 8; i++) {
    for (j = 1; j + i < 8; j++) {
      if (s[j - 1] < s[j]) {
        t = s[j - 1];
        s[j - 1] = s[j];
        s[j] = t;
      }
    }
  }

  max_val = 0;

  // Construct the largest integer from sorted digits
  for (i = 0; i < 8; i++) {
    max_val *= 10;
    max_val += s[i];
  }

  // Reverse the order of digits in array s
  for (i = 0; i * 2 < 8; i++) {
    t = s[i];
    s[i] = s[7 - i];
    s[7 - i] = t;
  }

  min_val = 0;

  // Construct the smallest integer from reversed digits
  for (i = 0; i < 8; i++) {
    min_val *= 10;
    min_val += s[i];
  }

  // Calculate and display the difference between the largest and smallest integers
  printf("\nThe difference between the largest integer and the smallest integer.\n");
  printf("%d - %d = %d\n", max_val, min_val, max_val - min_val);

  return 0;
}

Sample Output:

Input an integer created by 8 numbers (0 to 9):
25346879

The difference between the largest integer and the smallest integer.
98765432 - 23456789 = 75308643

Flowchart:

C Programming Flowchart: Find the difference between the largest integer and the smallest integer created by 8 numbers from 0 to 9.

C programming Code Editor:

Previous: Write a C program which reads the two adjoined sides and the diagonal of a parallelogram and check whether the parallelogram is a rectangle or a rhombus.
Next: Write a C program to create maximum number of regions obtained by drawing n given straight lines.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Become a Patron!

Follow us on Facebook and Twitter for latest update.

It will be nice if you may share this link in any developer community or anywhere else, from where other developers may find this content. Thanks.

https://www.w3resource.com/c-programming-exercises/basic-declarations-and-expressions/c-programming-basic-exercises-143.php