CONTROL STRUCTURES II: REPETITION - Java Programming: From Problem Analysis to Program Design - page 315

x = 5; y = 80;

b.

do
x = x * 2;
while (x < y);

System.out.println(x + " " + y);

x = 5; y = 20;

c.

do

x = x + 2;
while (x >= y);

System.out.println(x + " " + y);

5

x = 5; y = 35;

d.

while (x < y)
x = x + 10;

System.out.println(x + " " + y);

x = 5; y = 30;

e.

while (x <= y)
x = x * 2;

System.out.println(x + " " + y);

x = 5; y = 30; f.

while (x > y)
x = x + 2;

System.out.println(x + " " + y);

33. Write an input statement validation loop that prompts the user to enter a
number less than 20 or greater than 75.

34. Rewrite the following as a for loop:
int i = 0, value = 0;

while (i <= 20)
{

if (i % 2 == 0 && i <= 10)
value = value + i * i;
else if (i % 2 == 0 && i > 10)
value = value + i;
else
value = value - i;
i = i + 1;

}

System.out.println("value = " + value);
What is the output of this loop?