Quiz for Accessing structure members

Q1: Which operator is used to access a member of a structure variable?

A. . (dot) B. -> (arrow) C. * (asterisk) D. & (address-of)

Q2: Which operator is used to access members through a pointer to a structure?

A. . (dot) B. -> (arrow) C. * (asterisk) D. & (address-of)

Q3: Given "struct Point *p;", how do you access the x member?

A. p.x B. p->x C. *p.x D. &p->x

Q4: What does the expression "ptr->member" mean?

A. Pointer to member B. Dereference pointer and access member C. Member of pointer D. Address of member

Q5: Which is the correct way to access member "age" of a structure variable "s"?

A. s.age B. s->age C. *s.age D. &s->age

Q6: How do you access structure members when you have a pointer to structure?

A. Using dot operator B. Using arrow operator C. Using comma operator D. Using address-of operator

Q7: If "struct Student *ptr;" points to a structure, how to set the "marks" member to 90?

A. ptr.marks = 90; B. (*ptr).marks = 90; C. ptr->marks = 90; D. Both B and C

Q8: Which operator has higher precedence: "." or "->"?

A. Dot operator B. Arrow operator C. Same precedence D. Depends on compiler

Q9: Can the dot operator be used on a structure pointer?

A. Yes B. No C. Only if pointer is dereferenced D. Only with typedef

Q10: What happens if you use dot operator directly on a pointer?

A. Compiles successfully B. Runtime error C. Compilation error D. Undefined behavior

Q11: Given "struct Employee emp; struct Employee *ptr = &emp;", which is correct to access "salary"?

A. ptr.salary B. ptr->salary C. emp->salary D. emp.salary()

Q12: How do you access the first character of a string member "name" inside a structure "s"?

A. s.name[0] B. s->name[0] C. *s.name D. &s.name[0]

Q13: Can you use pointer arithmetic with structure pointers when accessing members?

A. Yes B. No C. Only with arrays D. Only with unions

Q14: If a structure member is a pointer, how do you access the data it points to?

A. Using dot operator B. Using arrow operator C. Using * (dereference) operator D. Using & operator

Q15: Which is true about "(*ptr).member" and "ptr->member"?

A. They are different B. They are equivalent C. Only ptr->member works D. Only (*ptr).member works

Q16: How to access a member of an array of structures?

A. array.member B. array->member C. array[index].member D. *array.member

Q17: What will happen if you access a member of an uninitialized structure pointer?

A. Access member successfully B. Segmentation fault C. Set member to zero D. Assign default value

Q18: Which header file is needed to use structures?

A. stdio.h B. stdlib.h C. No special header is required D. string.h

Q19: Which is correct to assign value 10 to member "count" in struct variable "data"?

A. data->count = 10; B. (*data).count = 10; C. data.count = 10; D. Both B and C

Q20: Which is true about structure member access?

A. You can only use dot operator B. You can only use arrow operator C. Use dot with variables, arrow with pointers D. Use arrow with variables, dot with pointers