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Which of the following is a properly defined structure?
- a)struct {int a;}
- b)struct a_struct {int a;}
- c)struct a_struct int a;
- d)struct a_struct {int a;};
Correct answer is option 'D'. Can you explain this answer?
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Which of the following is a properly defined structure?a)struct {int a...
Properly Defined Structure:
A properly defined structure in C programming is a user-defined data type that allows you to combine different data types under a single name. It is defined using the "struct" keyword followed by a struct tag, which is an optional identifier for the structure, and a list of member variables enclosed in braces.
The correct option among the given choices is option D, which is:
struct a_struct {int a;};
Explanation:
Let's break down the options and understand why option D is the correct answer.
a) struct {int a;};
This option defines an unnamed structure with a single member variable "a" of type int. While this is a valid structure declaration, it is not a properly defined structure because it lacks a struct tag. A struct tag is essential for future references to the structure.
b) struct a_struct {int a;};
This option defines a structure named "a_struct" with a single member variable "a" of type int. This is a properly defined structure as it includes a struct tag and specifies the member variable.
c) struct a_struct int a;
This option is not a valid structure definition. It seems to be a combination of a structure definition and variable declaration. The correct syntax for declaring a variable of a structure type would be:
struct a_struct variable_name;
d) struct a_struct {int a;};
This option defines a structure named "a_struct" with a single member variable "a" of type int. This is the correct and properly defined structure as it includes a struct tag and specifies the member variable.
In summary, option D is the correct answer because it defines a structure named "a_struct" with a member variable "a" of type int, adhering to the proper syntax of a structure definition.
A properly defined structure in C programming is a user-defined data type that allows you to combine different data types under a single name. It is defined using the "struct" keyword followed by a struct tag, which is an optional identifier for the structure, and a list of member variables enclosed in braces.
The correct option among the given choices is option D, which is:
struct a_struct {int a;};
Explanation:
Let's break down the options and understand why option D is the correct answer.
a) struct {int a;};
This option defines an unnamed structure with a single member variable "a" of type int. While this is a valid structure declaration, it is not a properly defined structure because it lacks a struct tag. A struct tag is essential for future references to the structure.
b) struct a_struct {int a;};
This option defines a structure named "a_struct" with a single member variable "a" of type int. This is a properly defined structure as it includes a struct tag and specifies the member variable.
c) struct a_struct int a;
This option is not a valid structure definition. It seems to be a combination of a structure definition and variable declaration. The correct syntax for declaring a variable of a structure type would be:
struct a_struct variable_name;
d) struct a_struct {int a;};
This option defines a structure named "a_struct" with a single member variable "a" of type int. This is the correct and properly defined structure as it includes a struct tag and specifies the member variable.
In summary, option D is the correct answer because it defines a structure named "a_struct" with a member variable "a" of type int, adhering to the proper syntax of a structure definition.
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Community Answer
Which of the following is a properly defined structure?a)struct {int a...
option struct {int a;} is not correct because name of structure and ;(after declaration) are missing. In option struct a_struct {int a;} ; is missing. In option struct a_struct int a; {} are missing.
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