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Arrays Of Structures - Questions and Answers

 

Practice these Arrays Of Structures under C Programming walk-in interview Questions/ examination questions with best tricks and short cuts with solution. Student (candidate) who want to crack the walk in interview, competitive exams and want to find short cuts and tricks to solve questions on Arrays Of Structures for following purpose.


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Here is list of Questions and Answers covering all key area of  Arrays Of Structures topic of C Programming:

 

1.

Comment on the output of this C code?

  1.     #include <stdio.h>
  2.     struct temp
  3.     {
  4.         int a;
  5.         int b;
  6.         int c;
  7.     };
  8.     main()
  9.     {
  10.         struct temp p[] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
  11.     }

Answer: Option D

Explanation:

2.

Which of the following uses structure?

Answer: Option D

Explanation:

3.

What is the output of this C code?

  1.     #include <stdio.h>
  2.     struct student
  3.     {
  4.         char *name;
  5.     };
  6.     struct student s[2];
  7.     void main()
  8.     {
  9.         s[0].name = "alan";
  10.         s[1] = s[0];
  11.         printf("%s%s", s[0].name, s[1].name);
  12.         s[1].name = "turing";
  13.         printf("%s%s", s[0].name, s[1].name);
  14.     }

Answer: Option B

Explanation:

4.

What is the output of this C code?

  1.     #include <stdio.h>
  2.     struct point
  3.     {
  4.         int x;
  5.         int y;
  6.     };
  7.     void foo(struct point*);
  8.     int main()
  9.     {
  10.         struct point p1[] = {1, 2, 3, 4};
  11.         foo(p1);
  12.     }
  13.     void foo(struct point p[])
  14.     {
  15.         printf("%d %d\n", p->x, ++p->x);
  16.     }

Answer: Option C

Explanation:

5.

What is the output of this C code?

  1.     #include <stdio.h>
  2.     struct point
  3.     {
  4.         int x;
  5.         int y;
  6.     };
  7.     void foo(struct point*);
  8.     int main()
  9.     {
  10.         struct point p1[] = {1, 2, 3, 4};
  11.         foo(p1);
  12.     }
  13.     void foo(struct point p[])
  14.     {
  15.         printf("%d\n", p->x);
  16.     }

Answer: Option D

Explanation:

6.

What is the output of this C code?

  1.     #include <stdio.h>
  2.     struct point
  3.     {
  4.         int x;
  5.         int y;
  6.     } p[] = {1, 2, 3, 4, 5};
  7.     void foo(struct point*);
  8.     int main()
  9.     {
  10.         foo(p);
  11.     }
  12.     void foo(struct point p[])
  13.     {
  14.         printf("%d %d\n", p->x, p[2].y);
  15.     }

Answer: Option D

Explanation:

7.

What is the correct syntax to declare a function foo() which receives an array of structure in     function?

Answer: Option C

Explanation:

8.

What is the output of this C code?

  1.     #include <stdio.h>
  2.     struct point
  3.     {
  4.         int x;
  5.         int y;
  6.     };
  7.     void foo(struct point*);
  8.     int main()
  9.     {
  10.         struct point p1[] = {1, 2, 3, 4, 5};
  11.         foo(p1);
  12.     }
  13.     void foo(struct point p[])
  14.     {
  15.         printf("%d %d\n", p->x, (p + 2)->y);
  16.     }

Answer: Option C

Explanation:

9.

What is the output of this C code?

  1.     #include <stdio.h>
  2.     struct student
  3.     {
  4.         char *name;
  5.     };
  6.     void main()
  7.     {
  8.         struct student s[2], r[2];
  9.         s[1] = s[0] = "alan";
  10.         printf("%s%s", s[0].name, s[1].name);
  11.     }

Answer: Option B

Explanation:

10.

What is the output of this C code?

  1.     #include <stdio.h>
  2.     struct point
  3.     {
  4.         int x;
  5.         int y;
  6.     };
  7.     void foo(struct point*);
  8.     int main()
  9.     {
  10.         struct point p1[]  =  {1, 2, 3, 4};
  11.         foo(p1);
  12.     }
  13.     void foo(struct point p[])
  14.     {
  15.         printf("%d\n", p[1].x);
  16.     }

Answer: Option C

Explanation:

11.

What is the output of this C code?

  1.     #include <stdio.h>
  2.     struct student
  3.     {
  4.         char *name;
  5.     };
  6.     struct student s[2], r[2];
  7.     void main()
  8.     {
  9.         s[0].name = "alan";
  10.         s[1] = s[0];
  11.         r = s;
  12.         printf("%s%s", r[0].name, r[1].name);
  13.     }

Answer: Option C

Explanation:

12.

What is the output of this C code?

  1.     #include <stdio.h>
  2.     struct student
  3.     {
  4.         char *c;
  5.     };
  6.     void main()
  7.     {
  8.         struct student s[2];
  9.         printf("%d", sizeof(s));
  10.     }

Answer: Option A

Explanation:

13.

The correct syntax to access the member of the ith structure in the array of structures is?

 Assuming: struct temp
    {
        int b;
    }s[50];

Answer: Option A

Explanation:

14.

What is the output of this C code?

  1.     #include <stdio.h>
  2.     struct point
  3.     {
  4.         int x;
  5.         int y;
  6.     };
  7.     void foo(struct point*);
  8.     int main()
  9.     {
  10.         struct point p1[] = {1, 2, 3, 4, 5};
  11.         foo(p1);
  12.     }
  13.     void foo(struct point p[])
  14.     {
  15.         printf("%d %d\n", p->x, p[3].y);
  16.     }

Answer: Option A

Explanation:

15.

What is the output of this C code?

  1.     #include <stdio.h>
  2.     struct student
  3.     {
  4.     };
  5.     void main()
  6.     {
  7.         struct student s[2];
  8.         printf("%d", sizeof(s));
  9.     }

Answer: Option A

Explanation: