Question

1.

After the declaration:

typedef struct { 
  int part1; 
  int part2;
} Foo;

Group of answer choices

Foo is a new data type which can be used to declare variables of this new type that holds two integers

Foo is a variable which holds a pointer to this new type that holds two integers

Foo is a variable which holds this new type that holds two integers

None of the above choices are correct

2.

After the declaration:

typedef struct { 
  int part1; 
  int part2;
} Foo;

Suppose you a variable named foo_ptr, which is pointer to a Foo (i.e. Foo * ). Which of the following is a proper way to access foo_ptr's part1 member?

Group of answer choices

foo_ptr->part1

*(foo_ptr.part1)

(*foo_ptr.part1)

None of the above

Answer 1

Answer:

Question 1:

The correct answer is A)

Explanation:

Typedef is used to define a new datatype according to our requirements.

In this case, a new datatype Foo is created which holds two integers part1, and part2.

We can use Foo datatype, just as we use other datatypes like int, char , float, etc.

Question 2:

The correct answer is A)

Explanation:

As foo_ptr is a pointer pointing to a variable of Foo type.

To access the fields part1 and part2 present in the Foo struct.

THe pointer should use -> operator.

foo_ptr->part1 , like this , the members can be accessed.

POINTERS use -> to access the fields directly while struct variables use dot(.) operator.

PLEASE UPVOTE IF YOU FOUND THIS HELPFUL!

PLEASE COMMENT IF YOU NEED ANY HELP!