Intro to Java Loops

Why are loops used in programming?

• To make your code look more complex.

• To avoid using if statements.

• To make your program look more professional.

• To run blocks of code repeatedly.

Each time through a loop is called a(n) ______________.

• iteration

• culmination

• concatenation

• itemization

What is the final value of x?

int x = 0;

while (x < 5)

x++;

• 6

• 5

• 4

• 0

• infinite loop

What is the final value of x?

int x = 4;

while (x <= 5)

x++;

• 6

• 5

• 4

• 0

• infinite loop

What is the final value of x?

int x = 3;

while (x > 5)

x++;

• 6

• 5

• 4

• 3

• infinite loop

What is the final value of x?

int x = 0;

for(int i = 1; i < 8; i += 3)

x += i;

• 12

• 22

• 7

• 0

• infinite loop

What is the final value of x?

int x = 0;

for(int i = 5; i > 0; i --)

x ++;

• 5

• 4

• 6

• 0

• infinite loop

What is the output of the following code?

for(int i = 3; i < 20; i +=4)

System.out.print(i + " ");

• 3 7 11 15 19 23

• 19

• 3 7 11 15 19

• 7 11 15 19

• 23

What is the final value of x?

int x = 3; 

for(int i = 4; i > 3; i += 2)

x++;

• 3

• 4

• 5

• 7

• infinite loop

What is the output of the following code?

int x = 7;

while(x <= 23) {

System.out.print(x + " ");

x+=4; }

• 7 11 15 19

• 7 11 15 19 23

• 23

• 7 11 15 19 23 27

• 27