Unit 4 practice question set 3

What is the output of the following code?

int x = 8;
int y = 7;

boolean b = x<y || x==8;

System.out.println(b);

• True

• False

What is the output of the following code?

int x = 5;
int y = 3;

if(x-- < 5 && y-->2)
System.out.print("A");
if(x==4 && ++y>1)
System.out.print("B");
if(x==y)
System.out.print("C");

What is the output of the following code?

int x=1;

if(x<3)
System.out.println("small");
if(x<6)
System.out.println("medium");
if (x<10)
System.out.println("large");

• large

• small
  medium
  large

• 
  medium

• small

When does an || statement short-circuit?

• When the left operand is false

  
  

• When the right operand is true

  
  

• When the right operand is false

  
  

• When the left operand is true

What is the output of the following code?

int x = 8;
int y = 7;

boolean b = x<y && x==8;

System.out.println(b);

• True

• False

What will be the output of the following code?

 

int a = 5;
if (a > 0) {
    if (a < 10) {
        System.out.println("Small number");
    } else {
        System.out.println("Large number");
    }
}

• Compilation error

• 
  Small number

• Large number

• 
  No output

What is the result of the following code when temperature is set to 75?

int temperature = 75;
if (temperature < 60) {
    System.out.println("Cold");
} else if (temperature >= 60 && temperature < 80) {
    System.out.println("Warm");
} else {
    System.out.println("Hot");
}

• no output

• hot

• warm

• cold

What will the following code print when n = 10?

int n = 10;
if (n > 5) {
    System.out.println("n is greater than 5");
    if (n > 15) {
        System.out.println("n is greater than 15");
    } else {
        System.out.println("n is less than or equal to 15");
    }
} else {
    System.out.println("n is less than or equal to 5");
}

•  n is less than or equal to 5

  
  

• n is greater than 5

  
  

• n is greater than 5
  n is greater than 15

• n is greater than 5
  n is less than or equal to 15

When does an && statement short-circuit?

• When the left operand is true

• When the right operand is true

• When the left operand is false

• When the right operand is false

Which of the following code segments correctly determines if a number x is both positive and even?

• if (x >= 0 && x / 2 == 0) {
      System.out.println("x is positive and even");
  }

• if (x > 0 || x % 2 == 0) {
      System.out.println("x is positive and even");
  }

• 
  if (x > 0 && x % 2 == 0) {
      System.out.println("x is positive and even");
  }

• if (x % 2 == 0) {
      System.out.println("x is positive and even");
  }