16. Which of these statements are incorrect?

1. 1. Assignment operators can be used only with numeric and character data type.

   
   
   

   2. Assignment operators are more efficiently implemented by Java run-time system than their equivalent long forms.

   
   
   

   3. Assignment operators run faster than their equivalent long forms.

   
   
   

   4. None of these

   
   
   

   5. NA

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   None

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17. Decrement operator, −−, decreases value of variable by what number?

1. 1. 4

   
   
   

   2. 1

   
   
   

   3. 2

   
   
   

   4. 3

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   None

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18. With x = 0, which of the following are legal lines of Java code for changing the value of x to 1?
    

    
       1. x++;
       2. x = x + 1;
       3. x += 1;
       4. x =+ 1;
    

1. 1. 1, 2, 3 & 4

   
   
   

   2. 3 & 2

   
   
   

   3. 1 & 4

   
   
   

   4. 1, 2 & 3

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   Operator ++ increases value of variable by 1. x = x + 1 can also be written in shorthand form as x += 1. Also x =+ 1 will set the value of x to 1.

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19. Modulus operator, %, can be applied to which of these?

1. 1. Floating – point numbers

   
   
   

   2. Integers

   
   
   

   3. Both Integers and floating – point numbers.

   
   
   

   4. None of these

   
   
   

   5. NA

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   Modulus operator can be applied to both integers and floating point numbers.

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20. Which of the following can be operands of arithmetic operators?

1. 1. Characters

   
   
   

   2. Boolean

   
   
   

   3. Numeric

   
   
   

   4. Both Numeric & Characters

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   The operand of arithmetic operators can be any of numeric or character type, But not boolean.

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