Java - Flow of Control Quiz

During program development, software requirements specify

• how the program will accomplish the task
• what the task is that the program must perform
• how to divide the task into subtasks 
• how to test the program when it is done

In which phase of program development would you expect the programmer(s) to determine the classes and objects needed?

• Software requirements
• Software design
• Software implementation
• Software testing

Which of the following would not be considered an algorithm?

• a recipe
• a computer program
• pseudocode
• a shopping list

If a programmer follows the four phases of program development as intended, which of the four phases should require the least amount of creativity?

• Software requirements
• Software design
• Software implementation
• Software testing

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

• boolean execution
• conditional statements
• try and catch
• flow of control

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--;
  

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?

• 0
• 2
• 3
• 4

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?

• 0
• 2
• 3
• 4

Given the nested if-else structure above, if x is currently 0, a = 1 and b = -1, what will x become after the above statement is executed?

• 0
• 2
• 3
• 5