1.The process of hand-tracing code is valuable because

Select one:

a. It is usually faster than just running the code.

b. It is the best way to design an algorithm.

c. You must already have a working program in order to do it.

d. It gives valuable insight that you do not get by running the code.

2.

Which loop does not check a condition at the beginning of the loop?

I. The do loop

II. The while loop

III. The for loop

Select one:

a. I and II

b. I and III

c. I only

d. III only

3.

In the following code snippet, when does the execution of the program switch from the inner loop to the outer loop?

int i; 

int j; 

for (i = 0; i <= 9; i++) 

{ 

 for (j = 1; j < 5; j++) 

 { 

 System.out.println("Hello"); 

 } 

} 

Select one:

a. When the value of j becomes 5

b. When the program executes completely

c. When the condition for the outer loop is met

d. When the value of i is incremented

4.How many times does the loop execute in the following code fragment?

int i; 

for (i = 0; i < 50; i = i + 4) 

{ 

 System.out.println(i); 

} 

Select one:

a. 11

b. 12

c. 13

d. 14

What will be the final output of the following code snippet when a user enters input values in the order 10, 20, 30, 40, 50, and -1?

public static void main(String[] args) 

{ 

 double sum = 0; 

 int count = 0; 

 double salary = 0; 

 double average = 0; 

 Scanner reader = new Scanner(System.in); 

 System.out.println("Enter salaries (-1 to stop): "); 

 while (salary != -1) 

 { 

 salary = reader.nextInt(); 

 if (salary != -1) 

 { 

 sum = sum + salary; 

 count++; 

 } 

 } 

 if (count > 0) 

 { 

 average = sum / count; 

 System.out.println("The Average Salary: " + average); 

 } 

 else 

 { 

 System.out.println ("No data!"); 

 } 

 return 0; 

} 

5. Select one:

a. The Average Salary: 0

b. The Average Salary: 30

c. The Average Salary: 24.83333

d. There will be no output as the code snippet will not compile.