Structure in C Language - Quiz

Q: What will be the output of the following C code?


    #include <stdio.h>
    struct temp
    {
        int a;
    } s;
    void func(struct temp s)
    {
        s.a = 10;
        printf("%d\t", s.a);
    }
    main()
    {
        func(s);
        printf("%d\t", s.a);
    }

A. 10 (Garbage Value)
B. 0 10
C. 10 0
D. (Garbage Value) 10

Correct Option: C
Explanation:

10 0

Q: What is the output of this C code?


    #include <stdio.h>
    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

Correct Option: B
Explanation: 10 10

Q: 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

Correct Option: D
Explanation: None of the mentioned

Q: What is the output of this C code?


    #include <stdio.h>
    struct point
    {
        int x;
        int y;
    };
    void foo(struct point*);
    int main()
    {
        struct point p1 = {1, 2};
        foo(&p1);
    }
    void foo(struct point *p)
    {
        printf("%d\n", *p.x++);
    }

A. Compile time error
B. Segmentation fault/code crash
C. 2
D. 1

Correct Option: A
Explanation: Compile time error

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

A. string
B. structures
C. char
D. all of the mentioned

Correct Option: B
Explanation: structures

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


    #include <stdio.h>
    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

Correct Option: A
Explanation: 3.000000

Q: What is the output of this C code?


    #include <stdio.h>
    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

Correct Option: B
Explanation: Compile time error

Q: Presence of code like “s.t.b = 10” indicate

A. Syntax Error
B. structure
C. double data type
D. An ordinary variable name

Correct Option: B
Explanation:

structure

The code "s.t.b = 10" suggests that there is a data structure or a variable named "s" which contains another data structure or variable named "t" which in turn contains a variable named "b". The code assigns the value 10 to the variable "b".

In C language, such a data structure or variable can be defined using a struct. Here is an example of how this code could be implemented in C:


struct t {
    int b;
};

struct s {
    struct t t;
};

int main() {
    struct s s;
    s.t.b = 10;
    return 0;
}

In this example, a struct "t" is defined which contains a single integer variable "b". Another struct "s" is defined which contains an instance of struct "t". In the main function, an instance of struct "s" is created and the value 10 is assigned to the variable "b" using the syntax "s.t.b = 10".

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


    #include <stdio.h>
    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

Correct Option: A
Explanation: 0.000000

Q: Which of the following cannot be a structure member?

A. Another structure
B. Function
C. Array
D. None of the mentioned

Correct Option: B
Explanation: Function

Structure in C Language - Quiz

What will be the output of the following C code? #include <stdio.h> struct temp { int a; } s; void func(struct temp s) { s.a = 10; printf("%d\t", s.a); } main() { func(s); printf("%d\t", s.a); }

What is the output of this C code? #include <stdio.h> struct p { int k; char c; }; int p = 10; int main() { struct p x; x.k = 10; printf("%d %d\n", x.k, p); }

Which of the following structure declaration will throw an error?

What is the output of this C code? #include <stdio.h> struct point { int x; int y; }; void foo(struct point*); int main() { struct point p1 = {1, 2}; foo(&p1); } void foo(struct point *p) { printf("%d\n", *p.x++); }

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

What is the output of this C code(according to C99 standard)? #include <stdio.h> struct p { int k; char c; float f; }; int main() { struct p x = {.c = 97, .f = 3, .k = 1}; printf("%f\n", x.f); }

What is the output of this C code? #include <stdio.h> void main() { struct student { int no; char name[20]; }; struct student s; no = 8; printf("%d", no); }

Presence of code like “s.t.b = 10” indicate

What is the output of this C code(according to C99 standard)? #include <stdio.h> struct p { int k; char c; float f; }; int main() { struct p x = {.c = 97}; printf("%f\n", x.f); }

Which of the following cannot be a structure member?

What will be the output of the following C code?

What is the output of this C code?

What is the output of this C code?

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

What is the output of this C code?

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