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  • Question
  • What will be the output of the program, if a short int is 2 bytes wide?
    #include<stdio.h>
    int main()
    {
        short int i = 0;
        for(i<=5 && i>=-1; ++i; i>0)
            printf("%u,", i);
        return 0;
    }
    


  • Options
  • A. 1 ... 65535
  • B. Expression syntax error
  • C. No output
  • D. 0, 1, 2, 3, 4, 5

  • Correct Answer
  • 1 ... 65535 

    Explanation
    for(i<=5 && i>=-1; ++i; i>0) so expression i<=5 && i>=-1 initializes for loop. expression ++i is the loop condition. expression i>0 is the increment expression.

    In for( i <= 5 && i >= -1; ++i; i>0) expression i<=5 && i>=-1 evaluates to one.

    Loop condition always get evaluated to true. Also at this point it increases i by one.

    An increment_expression i>0 has no effect on value of i.so for loop get executed till the limit of integer (ie. 65535)


    More questions

    • 1. Bitwise can be used to reverse a sign of a number.

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 2. 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
    • 3. Bitwise can be used to generate a random number.

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 4. 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
    • 5. Bitwise & can be used to check if more than one bit in a number is on.

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

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

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 8. Bitwise | can be used to set multiple bits in number.

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 9. Bitwise & can be used to check if a bit in number is set or not.

    • Options
    • A. True
    • B. False
    • Discuss
    • 10. A pointer union CANNOT be created

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


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