C Programming – Basics of Structures

C Programming - Basics of Structures

Question 1

Which of the following are themselves a collection of different data types?

A	string
B	structures
C	char
D	All of the mentioned

Question 2

 User-defined data type can be derived by___________.

A	struct
B	enum
C	typedef
D	All of the mentioned

Question 3

Which operator connects the structure name to its member name?

A	-
B	<-
C	.
D	Both (b) and (c)

Question 4

 Which of the following cannot be a structure member?

A	Another structure
B	function
C	Array
D	None of the mentioned

Question 5

 Which of the following structure declaration will throw an error?

A	struct temp{}s; main(){}
B	struct temp{}; struct temp s; main(){}
C	struct temp s; struct temp{}; main(){}
D	None of the mentioned

Question 6

What is the output of this C code?

        #include 
        struct student
        {
        int no;
        char name[20];
        }
        void main()
        {
        struct student s;
        s.no = 8;
        printf("hello");
        }

A	Compile time error
B	Nothing
C	hello
D	Varies

Question 7

What is the output of this C code?

        #include 
        struct student
        {
        int no = 5;
        char name[20];
        };
        void main()
        {
        struct student s;
        s.no = 8;
        printf("hello");
        } 

A	Nothing
B	Compile time error
C	hello
D	Varies

Question 8

 What is the output of this C code?

    #include 
    struct student
    {
    int no;
    char name[20];
    };
    void main()
    {
    student s;
    s.no = 8;
    printf("hello");
    }

A	Nothing
B	hello
C	Compile time error
D	Varies

Question 9

. What is the output of this C code?

    #include 
    void main()
    {
    struct student
    {
    int no;
    char name[20];
    };
    struct student s;
    s.no = 8;
    printf("%d", s.no);
    }

A	Nothing
B	Compile time error
C	Junk
D	8

Question 10

Can the above code be compiled successfully?

    #include 
    struct p
    {
    int k;
    char c;
    float f;
    };
    int main()
    {
    struct p x = {.c = 97, .f = 3, .k = 1};
    printf("%f\n", x.f);
    }

A	Yes
B	No
C	Depends on the standard
D	Depends on the platform

Question 11

What is the output of this C code?

        #include 
        void main()
        {
        struct student
        {
        int no;
        char name[20];
        };
        struct student s;
        no = 8;
        printf("%d", no);
        }

A	Nothing
B	Compile time error
C	Junk
D	8

Question 12

Number of bytes in memory taken by the below structure is?

    #include 
    struct test
    {
    int k;
    char c;
    };

A	Multiple of integer size
B	integer size+character size
C	Depends on the platform
D	Multiple of word size

Question 13

What is the output of this C code?

    #include 
    struct
    {
    int k;
    char c;
    };
    int main()
    {
    struct p;
    p.k = 10;
    printf("%d\n", p.k);
    }

A	Compile time error
B	10
C	Undefined behaviour
D	Segmentation fault

Question 14

What is the output of this C code?

    #include 
    struct
    {
    int k;
    char c;
    } p;
    int p = 10;
    int main()
    {
    p.k = 10;
    printf("%d %d\n", p.k, p);
    }

A	Compile time error
B	10 10
C	Depends on the standard
D	Depends on the compiler

Question 15

What is the output of this C code?

    #include 
    struct p
    {
    int k;
    char c;
    };
    int p = 10;
    int main()
    {
    struct p x;
    x.k = 10;
    printf("%d %d\n", x.k, p);
    }

A	Compile time error
B	10 10
C	Depends on the standard
D	Depends on the compiler

Question 16

What is the output of this C code?

    #include 
    struct p
    {
    int k;
    char c;
    float f;
    };
    int p = 10;
    int main()
    {
    struct p x = {1, 97};
    printf("%f %d\n", x.f, p);
    }

A	Compile time error
B	0.000000 10
C	Somegarbage value 10
D	0 10

Question 17

What is the output of this C code(according to C99 standard)?

    #include 
    struct p
    {
    int k;
    char c;
    float f;
    };
    int main()
    {
    struct p x = {.c = 97, .f = 3, .k = 1};
    printf("%f\n", x.f);
    }

A	3.000000
B	Compile time error
C	Undefined behaviour
D	1.000000

Question 18

What is the output of this C code(according to C99 standard)?

    #include 
    struct p
    {
    int k;
    char c;
    float f;
    };
    int main()
    {
    struct p x = {.c = 97, .k = 1, 3};
    printf("%f \n", x.f);
    }

A	3.000000
B	0.000000
C	Compile time error
D	Undefined behaviour

Question 19

What is the output of this C code(according to C99 standard)?

    #include 
    struct p
    {
    int k;
    char c;
    float f;
    };
    int main()
    {
    struct p x = {.c = 97};
    printf("%f\n", x.f);
    }

A	0.000000
B	Somegarbagevalue
C	Compile time error
D	None of the mentioned

Check Your Answers:

  1. B

  2. D

  3. C

  4. B

  5. D

  6. A

  7. B

  8. C

  9. D

10. C

11. B

12. B

13. A

14. A

15. B

16. B

17. A 

18. B

19. A

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