1. Which of the following is not allowed?
   

1. 1. Pointers to bit fields

   
   
   

   2. Functions returning bit fields

   
   
   

   3. Arrays of bit fields

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: E

   None of these

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2. In the following declaration of bit-fields, the constant-expression specifies __________.
   

   struct-declarator:
       declarator
       type-specifier declarator opt : constant-expression
   

1. 1. Error

   
   
   

   2. The width of the field in bytes

   
   
   

   3. Nothing

   
   
   

   4. The width of the field in bits

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   The width of the field in bits

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3. In the following declaration of bit-fields, the constant-expression must be __________.
   

   struct-declarator:
       declarator
       type-specifier declarator opt : constant-expression
   

1. 1. Nonnegative integer value

   
   
   

   2. Any type

   
   
   

   3. Nothing

   
   
   

   4. Integer value

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   Nonnegative integer value

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4. Calculate the % of memory saved when bit-fields are used for the following C structure as compared to with-out use of bit-fields for the same structure? (Assuming size of int = 4)
   

   struct test
       {
           int p : 1;
           int q : 2;
           int r : 4;
           int s : 4;
       }stu;
   

1. 1. 75%

   
   
   

   2. 50%

   
   
   

   3. 33.3%

   
   
   

   4. 25%

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   75%

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5. Bit fields can only be declared as part of a structure.
   

1. 1. Varies

   
   
   

   2. Nothing

   
   
   

   3. false

   
   
   

   4. true

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   true

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