C Programming – Arrays of Structures

C Programming - Arrays of Structures

Question 1

The correct syntax to access the member of the ith structure in the array of structures is?     Assuming: struct temp     {         int b;     }s[50];

A	s.b.[i];
B	s.[i].b;
C	s.b[i];
D	s[i].b;

Question 2

Comment on the output of this C code?

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

A	No Compile time error, generates an array of structure of size 3
B	No Compile time error, generates an array of structure of size 9
C	Compile time error, illegal declaration of a multidimensional array
D	Compile time error, illegal assignment to members of structure

Question 3

Which of the following uses structure?

A	Array of structures
B	Linked Lists
C	Binary Tree
D	All of the mentioned

Question 4

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

A	void foo(struct *var);
B	void foo(struct *var[]);
C	void foo(struct var);
D	None of the mentioned

Question 5

What is the output of this C code? (Assuming size of int be 4)

    #include 
    struct temp
    {
    int a;
    int b;
    int c;
    } p[] = {0};
    main()
    {
    printf("%d", sizeof(p));
    }

A	4
B	12
C	16
D	Can’t be estimated due to ambigous initialization of array

Question 6

What is the output of this C code?

    #include 
    struct student
    {
    char *name;
    };
    struct student s[2];
    void main()
    {
    s[0].name = "alan";
    s[1] = s[0];
    printf("%s%s", s[0].name, s[1].name);
    s[1].name = "turing";
    printf("%s%s", s[0].name, s[1].name);
    }

A	alan alan alan turing
B	alan alan turing turing
C	alan turing alan turing
D	Run time error

Question 7

What is the output of this C code?

    #include 
    struct student
    {
    char *name;
    };
    struct student s[2], r[2];
    void main()
    {
    s[0].name = "alan";
    s[1] = s[0];
    r = s;
    printf("%s%s", r[0].name, r[1].name);
    }

A	alan alan
B	Compile time error
C	Varies
D	Nothing

Question 8

What is the output of this C code?

    #include 
    struct student
    {
    char *name;
    };
    void main()
    {
    struct student s[2], r[2];
    s[1] = s[0] = "alan";
    printf("%s%s", s[0].name, s[1].name);
    }

A	alan alan
B	Nothing
C	Compile time error
D	Varies

Question 9

What is the output of this C code?

    #include 
    struct student
    {
    };
    void main()
    {
    struct student s[2];
    printf("%d", sizeof(s));
    }

A	2
B	4
C	8
D	0

Question 10

What is the output of this C code?

    #include 
    struct point
    {
    int x;
    int y;
    };
    void foo(struct point*);
    int main()
    {
    struct point p1[]  =  {1, 2, 3, 4};
    foo(p1);
    }
    void foo(struct point p[])
    {
    printf("%d\n", p[1].x);
    }

A	Compile time error
B	3
C	2
D	1

Question 11

What is the output of this C code?

    #include 
    struct point
    {
    int x;
    int y;
    };
    void foo(struct point*);
    int main()
    {
    struct point p1[] = {1, 2, 3, 4};
    foo(p1);
    }
    void foo(struct point p[])
    {
    printf("%d\n", p->x);
    }

A	1
B	2
C	3
D	Compile time error

Question 12

What is the output of this C code?

    #include 
    struct point
    {
    int x;
    int y;
    };
    void foo(struct point*);
    int main()
    {
    struct point p1[] = {1, 2, 3, 4};
    foo(p1);
    }
    void foo(struct point p[])
    {
    printf("%d %d\n", p->x, ++p->x);
    }

A	1 2
B	22
C	Compile time error
D	Undefined behaviour

Question 13

What is the output of this C code?

    #include 
    struct point
    {
    int x;
    int y;
    } p[] = {1, 2, 3, 4, 5};
    void foo(struct point*);
    int main()
    {
    foo(p);
    }
    void foo(struct point p[])
    {
    printf("%d %d\n", p->x, p[2].y);
    }

A	1 0
B	Compile time error
C	1 somegarbagevalue
D	Undefined behaviour

Question 14

What is the output of this C code?

    #include 
    struct point
    {
    int x;
    int y;
    };
    void foo(struct point*);
    int main()
    {
    struct point p1[] = {1, 2, 3, 4, 5};
    foo(p1);
    }
    void foo(struct point p[])
    {
    printf("%d %d\n", p->x, p[3].y);
    }

A	Compile time error
B	1 0
C	1 somegarbagevalue
D	None of the mentioned

Question 15

What is the output of this C code?

    #include 
    struct point
    {
    int x;
    int y;
    };
    void foo(struct point*);
    int main()
    {
    struct point p1[] = {1, 2, 3, 4, 5};
    foo(p1);
    }
    void foo(struct point p[])
    {
    printf("%d %d\n", p->x, (p + 2).y);
    }

A	Compile time error
B	1 0
C	1 somegarbagevalue
D	Undefined behaviour

Question 16

What is the output of this C code?

    #include 
    struct point
    {
    int x;
    int y;
    };
    void foo(struct point*);
    int main()
    {
    struct point p1[] = {1, 2, 3, 4, 5};
    foo(p1);
    }
    void foo(struct point p[])
    {
    printf("%d %d\n", p->x, (p + 2)->y);
    }

A	Compile time error
B	1 0
C	1 somegarbagevalue
D	undefined behaviour

Question 17

What is the output of this C code?

    #include 
    struct student
    {
    char *c;
    };
    void main()
    {
    struct student s[2];
    printf("%d", sizeof(s));
    }

A	2
B	4
C	16
D	8

Check Your Answers:

  1. D

  2. A

  3. D

  4. A

  5. B

  6. A

  7. C

  8. C

  9. D

10. B

11. A

12. B

13. A

14. C

15. A

16.B

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