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Home C Programming Memory Allocation See What Others Are Saying!
  • Question
  • How many bytes of memory will the following code reserve?
    #include<stdio.h>
    #include<stdlib.h>
    
    int main()
    {
        int *p;
        p = (int *)malloc(256 * 256);
        if(p == NULL)
            printf("Allocation failed");
        return 0;
    }
    


  • Options
  • A. 65536
  • B. Allocation failed
  • C. Error
  • D. No output

  • Correct Answer
  • Allocation failed 

    Explanation
    Hence 256*256 = 65536 is passed to malloc() function which can allocate upto 65535. So the memory allocation will be failed in 16 bit platform (Turbo C in DOS).

    If you compile the same program in 32 bit platform like Linux (GCC Compiler) it may allocate the required memory.


    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


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