void main() {
    int evens = 0;

    for (int number = 1; number <= 50; number++) {
        if (number % 2 == 0) {
            evens++;
        }
    }

    IO.println("There are " + evens + " even numbers from 1 to 50.");
}

// From Groundwork, chapter 5 (ch05-repetition), box 10.
// This example is from Groundwork, licensed CC BY-NC-SA 4.0.
// Run with: java ch05_10.java