1.Consider the following loop which is an inefficient (at best) attempt to increment count 200 times:
for ( k = 0; k < 200; k++);
count++;
Check all true statements (there will be more than one).
Remember: all variables are assumed to be declared prior to the loop, as needed.
A.It has a compiler error because of the extra semicolon.
B.It has a logic error because of the extra semicolon.
C.It has no compiler errors.
D.It has both compiler and run-time errors.
2.At the end of the third (3rd) loop pass of the following loop:
int count = -2;
for (int k = 3; k < 10; k++)
count++;
what is the value of count?
5
3
1
9
3.Consider the statement:
if ( (ans == 'Y' || errors < 5) && numTries < 10 ) // note uppercase 'Y'
count++;
Which combinations of values results in count being incremented after the statement is complete?
(Select all that apply.)
A. ans = 'N'
errors = 3
numTries = 10
B. ans = 'y' (lower case)
errors = 4
numTries = 5
C. ans = 'Y' (upper case)
errors = 6
numTries = 5
D. ans = 'N'
errors = 5
numTries = 5
E.ans = 'Y' (upper case)
errors = 100
numTries = -1
4.For the two code segments below:
Segment A
int q = 5;
switch(q)
{
case 1:
System.out.println(1);
case 2:
System.out.println(2);
case 3:
System.out.println(3);
case 4:
System.out.println(4);
case 5:
System.out.println(5);
default:
System.out.println("default");
}
Segment B
q = 4;
switch(q)
{
case 1:
System.out.println(1);
case 2:
System.out.println(2);
case 3:
System.out.println(3);
case 4:
System.out.println(4);
case 5:
System.out.println(5);
default:
System.out.println("default");
}
Which of the following statements is true?
A.The output for Segment A is:
default
B.The output for Segment B is:
4
C.The output for Segment B is:
45default
D.The output for Segment A is:
5
default
5. What will be the value of x
after the following code is executed?
int x = 10; while (x < 50) { x -= 10; }
A.40
B.50
C.60
D.10
6. What output will be produced by the following code?
int evenNumber = 2;
do
{
System.out.println(evenNumber);
evenNumber += 2;
}while(evenNumber < 10);
A. 2,4,6,8,10
B.2,4,6,8
C.2,4,6
D.0,2,4,6,8,10
7. Consider the following snippet of code:
int firstNum = 5;
int secondNum = firstNum++;
int thirdNum = 6 * (++firstNum);
What values are stored in firstNum and secondNum after these lines are executed
A.secondNum will contain 6 and firstNum will contain 5.
B.secondNum will contain 5 and firstNum will contain 6.
C.secondNum will contain 4 and firstNum will contain 5.
D.secondNum will contain 5 and firstNum will contain 4.