16. Presence of code like “s.t.b = 100” indicates __________.
    

1. 1. double data type

   
   
   

   2. Syntax Error

   
   
   

   3. Structure

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   Structure

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17. Which of the following operation is illegal in structures?
    

1. 1. Dynamic allocation of memory for structure

   
   
   

   2. Typecasting of structure

   
   
   

   3. Pointer to a variable of same structure

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   Typecasting of structure

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18. Which of the following is not possible under any scenario?
    

1. 1. n1 = n2;

   
   
   

   2. (*n1).number = 10;

   
   
   

   3. n1 = &n2;

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: E

   n1 = n2; or (*n1).number = 10; and n1 = &n2; are not possible under any scenario.

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19. What will be the output of the following C code?
    

    #include <stdio.h>
        struct test
        {
            int num;
        } t;
        void func(struct test t)
        {
            t.num = 125;
            printf("%d ", t.num);
        }
        main()
        {
            func(t);
            printf("%d ", t.num);
        }
    

1. 1. Compilation Error

   
   
   

   2. 125 0

   
   
   

   3. Garbage value

   
   
   

   4. Nothing

   
   
   

   5. None of these
      

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   125 0

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20. Which of the following return-type cannot be used for a function in C?
    

1. 1. struct

   
   
   

   2. void

   
   
   

   3. char *

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: E

   struct, void and char * return-type cannot be used for a function in C.

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