Write a C++ program using the concept of OOP to find the first and last digits of a number

Write a C++ program using the concept of OOP to find the first and last digits of a number.

Algorithm:

1. Create a Number class with private variable num to store the number whose first and last digits are to be found.
2. Define a public method firstAndLast() in the class to find the first and last digits of the stored number by using mathematical operations and prints the result.
3. In the main() function, prompt the user to enter a number.
4. Create a Number object with the number entered by the user.
5. Call the firstAndLast() method of the Number object to find and print the first and last digits of the entered number.
6. End the program.

Coding:

#include <iostream>
using namespace std;
 
class Number {
  private:
    int num;
  public:
    Number(int x) {
      num = x;
    }
 
    void firstAndLast() {
      int first = num;
      while (first >= 10) {
        first /= 10;
      }
      int last = num % 10;
      cout << "First digit: " << first << endl;
      cout << "Last digit: " << last << endl;
    }
};
 
int main() {
  int num;
 
  cout << "Enter a number: ";
  cin >> num;
 
  Number n(num);
 
  n.firstAndLast();
 
  return 0;
}
/*
Input:
Enter a number: 123456789
 
Output:
First digit: 1
Last digit: 9
*/

#OOP
#HappyProgramming
#HappyCoding