Term
The code below is an example of a(n) ____ loop.
Scanner cin = new Scanner(System.in);
boolean found = true;
while (found)
{
int entry = cin.nextInt();
int triple = entry * 3;
if (entry > 33)
found = false;
}
Answer
A. counter-controlled
B. EOF-controlled
C. sentinel-controlled
D. flag-controlled |
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Definition
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Term
What is the output of the following Java code?
int count = 1;
int num = 25;
while (count < 25)
{
num = num - 1;
count++;
}
System.out.println(count + " " + num);
Answer
A. 24 0
B. 25 1
C. 25 0
D. 24 1 |
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Definition
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Term
Suppose the input entered by the user is:
18 25 61 6 -1
What is the output of the following code?
Scanner cin = new Scanner(System.in);
int sum = 0;
int num = cin.nextInt();
while (num != -1)
{
sum = sum + num;
num = cin.nextInt();
}
System.out.println(sum);
Answer
A. 92
B. 109
C. 110
D. None of these |
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Definition
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Term
What is the output of the following Java code?
Which executes immediately after a continue statement in a for loop?
Answer
A. initial statement
B. the body of the loop
C. update statement
D. loop condition |
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Definition
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Term
int j;
for (j = 10; j <= 10; j++)
System.out.print(j + " ");
System.out.println(j);
Answer
A. 10
B. 11 11
C. 10 10
D. 10 11 |
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Definition
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Term
Which of the following is the update expression in the for loop below?
for (int i = 1; i < 20; i++)
System.out.println("Hello World");
System.out.println("!");
Answer
A. System.out.println("Hello World");
B. i < 20;
C. i++;
D. i = 1; |
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Definition
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Term
Suppose the input entered by the user is:
4 7 12 9 -1
What is the output of the following code?
Scanner cin = new Scanner(System.in);
int sum, num, j;
sum = cin.nextInt();
num = cin.nextInt();
for (j = 1; j <= 3; j++)
{
num = cin.nextInt();
sum = sum + num;
}
Answer
A. 24
B. 42
C. 25
D. 41 |
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Definition
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Term
Which of the following loops is guaranteed to execute at least once?
Answer
A. sentinel-controlled while loop
B. for loop
C. do...while loop
D. counter-controlled while loop |
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Definition
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Term
Which executes first in a do...while loop?
Answer
A. update expression
B. initial statement
C. logical expression
D. statement |
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Definition
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Term
Which of the following is NOT a reserved word in Java?
Answer
A. do
B. loop
C. while
D. for |
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Definition
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Term
Which of the following does not have an entry condition?
Answer
A. for loop
B. EOF-controlled while loop
C. sentinel-controlled while loop
D. do...while loop |
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Definition
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Term
What is the final value of x in the code below?
int x = 5;
int y = 30;
do
x = x * 2;
while (x < y);
Answer
A. 5
B. 10
C. 40
D. 20 |
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Definition
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Term
What is the output of the following Java code?
int x = 7;
boolean found = false;
do
{
System.out.print(x + " ");
if (x <= 2)
found = true;
else
x = x - 5;
}
while (x > 0 && !found);
System.out.println();
Answer
A. 7
B. 2 7
C. 7 2
D. None of these |
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Definition
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