Flash cards
Review the key moves
1/4
Core idea
What is the main idea behind Java How To - Sum of Digits?
Lesson checks
Practice each idea before moving on
Short Mimo-style checks built from this lesson's code, terms, and sequence.
1Quick choice
Which statement best captures the main point of this lesson?
2Fill blank
Complete the missing token from the example code.
___ n = 352;Sum of Digits of a Number
Add up all digits (e.g., 352: 3 + 5 + 2 = 10):
Example
int n = 352;
int sum = 0;
while (n > 0) {
sum += n % 10;
n /= 10;
}
System.out.println("Sum of digits: " + sum);Explanation: We use n % 10 to extract the last digit, add it to the sum, and then remove the digit with n /= 10 .