Question

1. Suppose x is 1 and y is 10. What is the output of the following code?

                       

If (x> 1) && ( y <11)

                                    Display statement

                        else

                                    Display nothing

2. Suppose x is 1 and y is 10. What is the output of the following code?

                        If (x> 1) || ( y <11)

                                    Display statement

                        Else

                                    Display nothing

3. Write a java program that prints 1 to infinite numbers.

4. The following program is supposed to write out the integers 1, 2, 3, and 4. Decide what should go in the blanks.

public class Counter
{  
  public static void main (String[] args)
  {
    int count ;
    count = (blank) ;  
    while ( count (blank) 4 )  
    {
       System.out.println( count );  
        count = count + (blank)  ;  
    }
  }
}

5. The following program is supposed to write out the integers 2, 1, 0, -1 . Decide what should go in the blanks.

public class Counter3
{  
  public static void main (String[] args)
  {
    int count ;
    count = (blank) ;  
    while ( count >= (blank) )  
    {
      System.out.println( count );  
      count = count - (blank)  ;  
    }
  }
}

6. The idea of a ______________ controlled loop is that there is a special value that says when the loop is done.

Answer 1

1.
Suppose x is 1 and y is 10
(x> 1) && ( y <11) is False
So, It prints
Display nothing
Answer:
Display nothing

2.
Suppose x is 1 and y is 10
(x> 1) || ( y <11) is True
So, It prints
Display statement
Answer:
Display statement

3.
//TestCode.java
public class TestCode {
    public static void main(String[] args) {
        int i = 0;
        while(true){
            System.out.println(i);
        }
    }
}

4.
public class Counter
{
  public static void main (String[] args)
  {
    int count ;
    count = 1 ;
    while ( count <= 4 )
    {
       System.out.println( count );
        count = count + 1  ;
    }
  }
}


5.
public class Counter3
{
  public static void main (String[] args)
  {
    int count ;
    count = 2 ;
    while ( count >= -1 )
    {
      System.out.println( count );
      count = count - 1  ;
    }
  }
}

6.
The idea of a sentinel controlled loop is that there is a special value that says when the loop is done.