Programming in C - Structure

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

• string

• structures

• char

• all of the mentioned

User-defined data type can be derived by___________

• struct

• enum

• typedef

• all of the mentioned

What will be the output of the following C code?

#include <stdio.h>

struct student

{

int no;

char name[20];

}

void main()

{

struct student s;

s.no = 8;

printf("hello");

}

• Compile time error

• Nothing

• hello

• Varies

Which of the following return-type cannot be used for a function in C?

• char *

• struct

• void

• none of the mentioned

Which of the following is not possible under any scenario?

• s1 = &s2;

• s1 = s2;

• (*s1).number = 10;

• None of the mentioned

Which of the following operation is illegal in structures?

• Typecasting of structure

• Pointer to a variable of the same structure

• Dynamic allocation of memory for structure

• All of the mentioned

Comment on the output of the following C code.

#include <stdio.h>

struct temp

{

int a;

int b;

int c;

};

main()

{

struct temp p[] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};

}

• No Compile time error, generates an array of structure of size 3

• No Compile time error, generates an array of structure of size 9

• Compile time error, illegal declaration of a multidimensional array

• Compile time error, illegal assignment to members of structure

Which of the following uses structure?

• Array of structures

• Linked Lists

• Binary Tree

• All of the mentioned

What will be the output of the following C code?

#include <stdio.h>

struct student

{

char *c;

};

void main()

{

struct student m;

struct student *s = &m;

s->c = "hello";

printf("%s", m.c);

}

• Run time error

• Nothing

• hello

• Varies

Which of the following is not possible regarding the structure variable?

• A structure variable pointing to itself

• A structure variable pointing to another structure variable of same type

• 2 different type of structure variable pointing at each other

• None of the mentioned