Are you tired of manually calculating the last digit of a number? Look no further! This quick expression guide will teach you how to retrieve the last digit of any number using a simple mathematical formula.
What is the Last Digit of a Number?
The last digit of a number refers to the digit located at the right-most position of the number. For example, in the number 12345, the last digit is 5.
Retrieving the Last Digit of a Number
To retrieve the last digit of a number, follow these simple steps:
- Divide the number by 10.
- Retrieve the remainder of the division using the modulus operator (%).
- The remainder is the last digit of the number.
Here's an example:
let num = 12345; let lastDigit = num % 10; console.log(lastDigit); // Output: 5
Q: Can this method be used for negative numbers?
A: Yes, this method works for both positive and negative numbers.
Q: What happens if I divide a number by 0?
A: Division by zero is undefined and will result in an error.
Q: Is there a limit to the size of the number that can be used with this method?
A: No, this method works for any size number.
Q: Can this method be used in other programming languages?
A: Yes, this method is applicable in most programming languages.
Q: Is there a faster way to retrieve the last digit of a number?
A: While there are other methods, this one is generally considered the quickest and most efficient.