Question

Rewrite the following program segment using a for loop.

     int a = 5, b = 10;

     while (b>0)

     {b−=2;

     }

     System.out.println (a * b);

Answer 1

int a = 5, b;
for (b = 10; b > 0; b-=2) 
{
    // empty body
}
System.out.println(a * b);

• b = 10 is moved to the first part of the for loop.
• b > 0 remains the same in the middle.
• The expression b-=2 is moved to the last part of the for header. Since the only action in the while loop was this update, the body of the for loop remains empty.