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COP Exam 2 Questions and Answers
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COP Exam 2 Questions and Answers
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COP Exam 2 Questions and AnswersAfter the execution of the following code, what will be the value of num if the input
values are 0? (Assume that console is a Scanner object initialized to the standard input
device.)
int num = console.nextInt();
if (num > 0)
num = num + 13;
else
if (num >= 3)
num = num + 15; - Answer-0
What is the output of the following Java code?
int x = 0;
if (x > 0)
System.out.println("positive ");
System.out.print("zero ");
System.out.println("negative"); - Answer-zero negative
What is the output of the following Java code?
int x = 57;
int y = 3;
switch (x % 9)
{
case 0:
case 1:
y++;
case 2:
y = y - 2;
break;
case 3:
y = y + 2;
case 4:
break;
case 5:
case 6:
y = y + 3;
, }
System.out.println(y); - Answer-5
if (quotaAmt > 100 || sales > 100 && productCode == "C")
bonusAmt = 50;
When the above code is executed, which operator is evaluated first? - Answer-==
Assume x=4 and y=5, which of the following is true? - Answer-x != 4 ^ y == 5
Assume x=4, which of the following is true? - Answer-x != 5
Assume x = 4 and y = 5, which of the following is true? - Answer-x < 5 || y < 5
Which of the following is the correct expression that evaluates to true if the number x is
between 1 and 100 or the number is negative? - Answer-( (x < 100) && (x > 1) ) || (x <
0)
A computer program will recognize both = and == as the equality operator. - Answer-
False
In Java, || has a higher precedence than &&. - Answer-False
Suppose that the input is 6 and console is a Scanner object initialized to the standard
input device. Consider the following code.
int alpha = 7;
int beta = console.nextInt();
switch (beta)
{
case 5:
alpha = alpha + 1;
case 6:
alpha = alpha + 2;
case 7:
alpha = alpha + 3;
default:
alpha = alpha + 5;
}
System.out.print(alpha);
The output of this code is 9. - Answer-False
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