Chapter 4 (Decision Structures)

Front

Is this code segment correct?
if(quizScore == 10)
System.out.println("Perfect score");

Back

Yes

Front

WHICH TYPE OF DECISION STRUCTURE IS THIS?

Back

Nested If

Front

What decision structure works best if you have more than two possible answers (multiple choice) to a question, and those answers can be integer or character based?

Back

A Switch statement

Front

Of the following if statements, which one correctly executes three instructions if the condition is true?
Options: if (x < 0)  
a = b * 2;  
y = x;  
 z = a – y;
, {
   if (x <0)
   a = b*2;
   y=x;
   z=a-y;
}, if { (x < 0) 
a = b * 2;  
y = x;  
 z = a – y;
}, if (x <0)
{
a = b*2;
y = x;
z = a - y;

Back

if (x <0)
{
a = b*2;
y = x;
z = a - y;

Front

Which of the sets of statements below will add 1 to x if x is positive and subtract 1 from x if x is negative but leave x alone if x is 0? Options: if (x > 0)  x++;
else x--;
, if (x > 0) x++;
else if (x < 0) x--;
, if (x > 0) x++;
if (x < 0) x--;
else x = 0;
, if (x == 0) x = 0;
else x++;
x--;

Back

if (x > 0) x++;
else if (x < 0) x--;

Front

How would you check for inequality?

Back

!=

Front

Is this code segment correct?
if(quizScore == 10);
  System.out.println("Perfect score");

Back

No

Front

The idea that program instructions execute in order (linearly) unless otherwise specified through a conditional statement is known as

Back

flow of control

Front

Given the nested if-else structure above, If x is currently 0, a = 5 and b = 5, what will x become after the above statement is executed?

Back

3

Front

Given the nested if-else structure above, if x is currently 0, a = 0 and b = -5, what will x become after the above statement is executed?

Back

2