logo

CuriousTab

CuriousTab

Discussion


Home C Programming Strings See What Others Are Saying!
  • Question
  • What will be the output of the program in 16-bit platform (Turbo C under DOS)?
    #include<stdio.h>
    
    int main()
    {
        printf("%d, %d, %d", sizeof(3.0f), sizeof('3'), sizeof(3.0));
        return 0;
    }
    


  • Options
  • A. 8, 1, 4
  • B. 4, 2, 8
  • C. 4, 2, 4
  • D. 10, 3, 4

  • Correct Answer
  • 4, 2, 8 

    Explanation
    Step 1:

    printf("%d, %d, %d", sizeof(3.0f), sizeof('3'), sizeof(3.0));

    The sizeof function returns the size of the given expression.

    sizeof(3.0f) is a floating point constant. The size of float is 4 bytes

    sizeof('3') It converts '3' in to ASCII value.. The size of int is 2 bytes

    sizeof(3.0) is a double constant. The size of double is 8 bytes

    Hence the output of the program is 4,2,8

    Note: The above program may produce different output in other platform due to the platform dependency of C compiler.

    In Turbo C, 4 2 8. But in GCC, the output will be 4 4 8.


    More questions

    • 1. Bitwise | can be used to set a bit in number.

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 2. Can we have an array of bit fields?

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 3. By default structure variable will be of auto storage class

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 4. Bitwise can be used to reverse a sign of a number.

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 5. Is it necessary that in a function which accepts variable argument list there should be at least be one fixed argument?

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 6. Bitwise can be used to generate a random number.

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 7. A function that receives variable number of arguments should use va_arg() to extract the last argument from the variable argument list.

    • Options
    • A. True
    • B. False
    • Discuss
    • 8. Bitwise & can be used to check if more than one bit in a number is on.

    • Options
    • A. True
    • B. False
    • Discuss
    • 9. The preprocessor can trap simple errors like missing declarations, nested comments or mismatch of braces.

    • Options
    • A. True
    • B. False
    • Discuss
    • 10. It is necessary that a header files should have a .h extension?

    • Options
    • A. Yes
    • B. No
    • Discuss


    Comments

    There are no comments.

Enter a new Comment