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Home ‣ C Programming ‣ Expressions See What Others Are Saying!
  • Question

  • Which of the following is the correct order if calling functions in the below code?
    a = f1(23, 14) * f2(12/4) + f3();


  • Options
  • A. f1, f2, f3
  • B. f3, f2, f1
  • C. Order may vary from compiler to compiler
  • D. None of above

  • Correct Answer
  • Order may vary from compiler to compiler 

    Explanation
    Here, Multiplication will happen before the addition, but in which order the functions would be called is undefined. In an arithmetic expression the parenthesis tell the compiler which operands go with which operators but do not force the compiler to evaluate everything within the parenthesis first.

    • More questions

    • 1. 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
    • 2. Bitwise can be used to generate a random number.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 3. 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
    • 4. Bitwise & can be used to check if more than one bit in a number is on.

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

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

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

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

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

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 10. What will be the output of the program? 
      #include<stdio.h>
#include<stdlib.h>

int main()
{
    union test
    {
        int i;
        float f;
        char c;
    };
    union test *t;
    t = (union test *)malloc(sizeof(union test));
    t->f = 10.10f;
    printf("%f", t->f);
    return 0;
}

    • Options
    • A. 10
    • B. Garbage value
    • C. 10.100000
    • D. Error
      • Discuss

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