Loops and the While Statement

Read this chapter, which explains while loops. This is in contrast to how a do-while loop works, which we will discuss later. In a do-while loop, the body of the loop is executed at least one time, whereas in a while loop, the loop may never execute if the loop condition is false.

7. Three Activities to Coordinate



Answer:
int count = 1;              // count is initialized
while ( count <= 3 )        // count is tested
{
  System.out.println( "count is:" + count );
  count = count + 1;        // count is changed
}
System.out.println( "Done with the loop" );      


Three Activities to Coordinate





    

    

    

        

            

                

            

        

    















    







    

    

    






Three activities of a loop must work together:


    
    
  1. The initial values must be set up correctly.
    2. 
    
  2. The condition in the while statement must be correct.
    3. 
    
  3. The change in variable(s) must be done correctly.
    4. 



In the above program we wanted to print the integers "1, 2, 3". Three parts of the program had to be coordinated for this to work correctly.




Question 7:
What will the program print if the initialization is changed as follows?
    int count = 0;               // count is initialized
while ( count <= 3 )         // count is tested
{
  System.out.println( "count is:" + count );
  count = count + 1;         // count is changed
}
System.out.println( "Done with the loop" );