public class LoopFirstExamples {

	public static void main(String[] args) {

		// Print a table of the numbers from 1 to 100
		int i = 1;
		while (i <= 100) {
			if (i % 10 != 0) {
				System.out.print(i + ", ");
			} else {
				System.out.println(i);
			}
			i++; // means i = i + 1
		}

		// Print the sum 1 + 2 + 3 + 4 + ... + 100 (should be 5050)
		// with a while loop
		int sum = 0;
		i = 1;
		while (i <= 100) {
			sum += i;
			i++;
		}
		System.out.println("sum with a while loop = " + sum);

		// with a do-while loop
		sum = 0;
		i = 1;
		do {
			sum += i;
			i++;
		} while (i <= 100);
		System.out.println("sum with a do-while loop = " + sum);

		// with a for loop
		sum = 0;
		// int k; k can be used outside of the for loop
		for (int k = 1; k <= 100; k++) { // or just within the for loop if
			// declared in the for statement
			sum += k;
		}
		System.out.println("sum with a for loop = " + sum);
		// System.out.println("k = " + k);
	}

}