Conditional Constructs in Java

Chapter 8

Conditional Constructs in Java

Class 10 - Logix Kips ICSE Computer Applications with BlueJ

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Java Program: Sum of First 500 Positive Odd Integers Using Do-While Loop

12. Write a program using do-while loop to compute the sum of the first 500 positive odd integers.

public class SumOfOddNumbers {
    public static void main(String[] args) {
 
        int count = 0;
        int odd = 1;
        long sum = 0;
 
        do {
            sum += odd;
            odd += 2;     // move to next odd number
            count++;
        } while (count < 500);
 
        System.out.println("Sum of first 500 positive odd integers = " + sum);
    }
}
 

Output
Sum of first 500 positive odd integers = 250000

📝 Explanation

• The first odd number is 1
• Each next odd number is obtained by adding 2
• The loop runs 500 times
• sum stores the total of all odd numbers
• Formula check (optional):
  Sum of first n odd numbers = n² → 500² = 250000