Q:

What are the differences between a class and a structure in C++?

belongs to collection: C++ Interview Questions and Answers(2022)

YasminRadwan26

Save to bookmark

|

2022-06-25

|

230

0

What are the differences between a class and a structure in C++?

C++ programming, Interview questions, C++ programming Interview-questions,

login and add your own answer to this question

All Answers

YasminRadwan26

2022-06-25

need an explanation for this answer? contact us directly to get an explanation for this answer

In C++, technically, the difference between the struct and class is that the struct is public by default and the class is private. Generally, we use the struct to carry the data. See the below comparison chart for struct and class,

`Structure`	`Class`
By default member variables and methods of the struct is `public`.	By default member variables and methods of the class is `private`.
When deriving a struct, the default access specifier is `public`.	When deriving a class, default access specifiers are `private`.

Let see two example codes to understand the difference between struct and class.

Example-1:

#include <iostream>
using namespace std;
class Test
{
    int x; // Default: x is private
};
int main()
{
    Test t;
    
    t.x = 20; // compiler error because x is private
    
    return 0;
}

Output: error: ‘int Test::x’ is private|

Example-2:

#include <iostream>
using namespace std;
struct Test
{
    int x; // Default: x is public
};
int main()
{
    Test t;
    t.x = 20; // No compiler error because x is public
    cout << t.x;
    return 0;
}

Output: 20

need an explanation for this answer? contact us directly to get an explanation for this answer

total answers (1)

Why is the size of an empty class not zero in C++?... >>

<< What are C++ access modifiers?...