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  • Question
  • What will be the output of the program?
    #include<stdio.h>
    #define MAX(a, b, c) (a>b? a>c? a : c: b>c? b : c)
    
    int main()
    {
        int x;
        x = MAX(3+2, 2+7, 3+7);
        printf("%d\n", x);
        return 0;
    }
    


  • Options
  • A. 5
  • B. 9
  • C. 10
  • D. 3+7

  • Correct Answer
  • 10 

    Explanation
    The macro MAX(a, b, c) (a>b ? a>c ? a : c: b>c ? b : c) returns the biggest of given three numbers.

    Step 1: int x; The variable x is declared as an integer type.

    Step 2: x = MAX(3+2, 2+7, 3+7); becomes,

    => x = (3+2 >2+7 ? 3+2 > 3+7 ? 3+2 : 3+7: 2+7 > 3+7 ? 2+7 : 3+7)

    => x = (5 >9 ? (5 > 10 ? 5 : 10): (9 > 10 ? 9 : 10) )

    => x = (5 >9 ? (10): (10) )

    => x = 10

    Step 3: printf("%d\n", x); It prints the value of 'x'.

    Hence the output of the program is "10".


    More questions

    • 1. Which of the following statements correct about k used in the below statement?
      char ****k;

    • Options
    • A. k is a pointer to a pointer to a pointer to a char
    • B. k is a pointer to a pointer to a pointer to a pointer to a char
    • C. k is a pointer to a char pointer
    • D. k is a pointer to a pointer to a char
    • Discuss
    • 2. What will be the output of the program?
      #include<stdio.h>
      
      void fun(void *p);
      int i;
      
      int main()
      {
          void *vptr;
          vptr = &i;
          fun(vptr);
          return 0;
      }
      void fun(void *p)
      {
          int **q;
          q = (int**)&p;
          printf("%d\n", **q);
      }
      

    • Options
    • A. Error: cannot convert from void** to int**
    • B. Garbage value
    • C. 0
    • D. No output
    • Discuss
    • 3. What will be the output of the program?
      #include<stdio.h>
      #include<string.h>
      
      int main()
      {
          static char s[] = "Hello!";
          printf("%d\n", *(s+strlen(s)));
          return 0;
      }
      

    • Options
    • A. 8
    • B. 0
    • C. 16
    • D. Error
    • Discuss
    • 4. What will be the output of the program?
      #include<stdio.h>
      
      int main()
      {
          int i=4, j=8;
          printf("%d, %d, %d\n", i|j&j|i, i|j&&j|i, i^j);
          return 0;
      }
      

    • Options
    • A. 4, 8, 0
    • B. 1, 2, 1
    • C. 12, 1, 12
    • D. 0, 0, 0
    • Discuss
    • 5. What will you do to treat the constant 3.14 as a float?

    • Options
    • A. use float(3.14f)
    • B. use 3.14f
    • C. use f(3.14)
    • D. use (f)(3.14)
    • Discuss
    • 6. What will be the output of the program if value 25 given to scanf()?
      #include<stdio.h>
      
      int main()
      {
          int i;
          printf("%d\n", scanf("%d", &i));
          return 0;
      }
      

    • Options
    • A. 25
    • B. 2
    • C. 1
    • D. 5
    • Discuss
    • 7. In the statement expression1 >> expression2. if expression1 is a signed integer with its leftmost bit set to 1 then on right shifting it the result of the statement will vary from computer to computer

    • Options
    • A. True
    • B. False
    • Discuss
    • 8. What do the following declaration signify?
      int *ptr[30];

    • Options
    • A. ptr is a pointer to an array of 30 integer pointers.
    • B. ptr is a array of 30 pointers to integers.
    • C. ptr is a array of 30 integer pointers.
    • D. ptr is a array 30 pointers.
    • Discuss
    • 9. Range of float id -2.25e+308 to 2.25e+308

    • Options
    • A. True
    • B. False
    • Discuss
    • 10. What will be the output of the program (in Turbo C under DOS)?
      #include<stdio.h>
      
      int main()
      {
          char huge *near *far *ptr1;
          char near *far *huge *ptr2;
          char far *huge *near *ptr3;
          printf("%d, %d, %d\n", sizeof(ptr1), sizeof(ptr2), sizeof(ptr3));
          return 0;
      }
      

    • Options
    • A. 4, 4, 8
    • B. 2, 4, 4
    • C. 4, 4, 2
    • D. 2, 4, 8
    • Discuss


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