Java-Control Statements Part 1

Boolean values are: 

• True / False
• Yes / No
• Right / Wrong

Java supports six relational operators that are used to make comparisons: =, <, >, <=, >=, =!

• True
• False

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

• Yes
• No

A structure consisting of a sequence of statements enclosed in braces, functioning as if it were a single statement.

• compound statement
• conditional expression
• condition
• branch

A ternary operator that has the syntax expression1 ? expression2 : expression3, which is equivalent to an if�else statement where expression1 is the condition and if true expression2 is executed, otherwise expression3 is executed.

• conditional operator
• conditional expression
• equality operator
• branch

WHICH TYPE OF DECISION STRUCTURE IS THIS?
if (x==10)
{
          if (y==20)
          {
                    System.out.println("Coordinates: 10, 20");
          }
}

• Switch
• If Else if 
• If else (binary choice)
• Nested If

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?

• Nested If Statements
• An If statement
• A Switch statement
• If else if statements

WHAT IS MISSING FROM THIS SWITCH STATEMENT THAT WILL CAUSE ALL STATEMENTS ON EVERY CASE PATH TO EXECUTE ONCE A SUITABLE ANSWER IS CHOSEN?
switch (flavor)
{
     case 'V':
          cone="Vanilla";
     case 'C':
          cone="Chocolate";
     case 'S':
          cone="Strawberry";
     default:
          cone="Empty";
}

• The case clause
• The break clause
• The continue clause
• The default clause

Of the following if statements, which one correctly executes three instructions if the condition is true?

• 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;
  }

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?

• 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--;