logo

CuriousTab

CuriousTab

Discussion


Home C Programming Pointers Comments

  • Question
  • In the following program add a statement in the function fact() such that the factorial gets stored in j.
    #include<stdio.h>
    void fact(int*);
    
    int main()
    {
        int i=5;
        fact(&i);
        printf("%d\n", i);
        return 0;
    }
    void fact(int *j)
    {
        static int s=1;
        if(*j!=0)
        {
            s = s**j;
            *j = *j-1;
            fact(j);
            /* Add a statement here */
        }
    }
    


  • Options
  • A. j=s;
  • B. *j=s;
  • C. *j=&s;
  • D. &j=s;

  • Correct Answer
  • *j=s; 


  • Pointers problems


    Search Results


    • 1. What will be the output of the program?
      #include<stdio.h>
      
      int main()
      {
          void *vp;
          char ch=74, *cp="JACK";
          int j=65;
          vp=&ch;
          printf("%c", *(char*)vp);
          vp=&j;
          printf("%c", *(int*)vp);
          vp=cp;
          printf("%s", (char*)vp+2);
          return 0;
      }
      

    • Options
    • A. JCK
    • B. J65K
    • C. JAK
    • D. JACK
    • Discuss
    • 2. What will be the output of the program?
      #include<stdio.h>
      int *check(static int, static int);
      
      int main()
      {
          int *c;
          c = check(10, 20);
          printf("%d\n", c);
          return 0;
      }
      int *check(static int i, static int j)
      {
          int *p, *q;
          p = &i;
          q = &j;
          if(i >= 45)
              return (p);
          else
              return (q);
      }
      

    • Options
    • A. 10
    • B. 20
    • C. Error: Non portable pointer conversion
    • D. Error: cannot use static for function parameters
    • Discuss
    • 3. What will be the output of the program?
      #include<stdio.h>
      
      int main()
      {
          static char *s[] = {"black", "white", "pink", "violet"};
          char **ptr[] = {s+3, s+2, s+1, s}, ***p;
          p = ptr;
          ++p;
          printf("%s", **p+1);
          return 0;
      }
      

    • Options
    • A. ink
    • B. ack
    • C. ite
    • D. let
    • Discuss
    • 4. What will be the output of the program?
      #include<stdio.h>
      
      int main()
      {
          char str[20] = "Hello";
          char *const p=str;
          *p='M';
          printf("%s\n", str);
          return 0;
      }
      

    • Options
    • A. Mello
    • B. Hello
    • C. HMello
    • D. MHello
    • Discuss
    • 5. What will be the output of the program?
      #include<stdio.h>
      
      int main()
      {
          int arr[2][2][2] = {10, 2, 3, 4, 5, 6, 7, 8};
          int *p, *q;
          p = &arr[1][1][1];
          q = (int*) arr;
          printf("%d, %d\n", *p, *q);
          return 0;
      }
      

    • Options
    • A. 8, 10
    • B. 10, 2
    • C. 8, 1
    • D. Garbage values
    • Discuss
    • 6. Which of the statements is correct about the program?
      #include<stdio.h>
      
      int main()
      {
          float a=3.14;
          char *j;
          j = (char*)&a;
          printf("%d\n", *j);
          return 0;
      }
      

    • Options
    • A. It prints ASCII value of the binary number present in the first byte of a float variable a.
    • B. It prints character equivalent of the binary number present in the first byte of a float variable a.
    • C. It will print 3
    • D. It will print a garbage value
    • Discuss
    • 7. Which of the statements is correct about the program?
      #include<stdio.h>
      
      int main()
      {
          int arr[3][3] = {1, 2, 3, 4};
          printf("%d\n", *(*(*(arr))));
          return 0;
      }
      

    • Options
    • A. Output: Garbage value
    • B. Output: 1
    • C. Output: 3
    • D. Error: Invalid indirection
    • Discuss
    • 8. Which statement will you add to the following program to ensure that the program outputs "CuriousTab" on execution?
      #include<stdio.h>
      
      int main()
      {
          char s[] = "CuriousTab";
          char t[25];
          char *ps, *pt;
          ps = s;
          pt = t;
          while(*ps)
              *pt++ = *ps++;
      
          /* Add a statement here */
          printf("%s\n", t);
          return 0;
      }
      

    • Options
    • A. *pt='';
    • B. pt='\0';
    • C. pt='\n';
    • D. *pt='\0';
    • Discuss
    • 9. In the following program add a statement in the function fun() such that address of a gets stored in j?
      #include<stdio.h>
      int main()
      {
          int *j;
          void fun(int**);
          fun(&j);
          return 0;
      }
      void fun(int **k)
      {
          int a=10;
          /* Add a statement here */
      }
      

    • Options
    • A. **k=a;
    • B. k=&a;
    • C. *k=&a
    • D. &k=*a
    • Discuss
    • 10. Which of the following statements correctly declare a function that receives a pointer to pointer to a pointer to a float and returns a pointer to a pointer to a pointer to a pointer to a float?

    • Options
    • A. float **fun(float***);
    • B. float *fun(float**);
    • C. float fun(float***);
    • D. float ****fun(float***);
    • Discuss


    Comments

    There are no comments.

Enter a new Comment