Assertions

Category: Assertions
Author: Stuart Reges
Book Chapter: 5.5
Problem: Assertions
	You will identify various assertions as being either always true, never true or sometimes true/sometimes false at various points in program execution.  The comments in the method below indicate the points of interest. 

public static int mystery(Scanner console) {
	int prev = 0;
	int count = 0;
	int next = console.nextInt();
	<span class="assertionpoint">// Point A
	while (next != 0) {
		<span class="assertionpoint">// Point B
		if (next == prev) {
			<span class="assertionpoint">// Point C
			count++;
		}
		prev = next;
		next = console.nextInt();
		<span class="assertionpoint">// Point D
	}
	<span class="assertionpoint">// Point E
	return count;
}


	Fill in the table below with the words ALWAYS, NEVER or SOMETIMES. 
1) next == 0
2) prev == 0  
3) next == prev