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When struct is used instead of the keyword class means, what will happen in the program?
- a)access is public by default
- b)access is private by default
- c)access is protected by default
- d)access is denied
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
When struct is used instead of the keyword class means, what will happ...
For structures, by default all the data members and member functions are public.
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When struct is used instead of the keyword class means, what will happ...
Explanation:
When the keyword "struct" is used instead of the keyword "class" in C++, it affects the default access level of its members. By default, the access level of members in a struct is public, whereas in a class, it is private.
Access Levels:
Access levels determine how the members (variables and functions) of a class or struct can be accessed by other parts of the program.
There are three access levels in C++:
1. Public: Members can be accessed from anywhere in the program.
2. Private: Members can only be accessed within the same class or struct.
3. Protected: Members can be accessed within the same class or struct, or by derived classes.
Default Access Level with "struct":
When the keyword "struct" is used instead of "class", the default access level of the members is set to public. This means that all the variables and functions declared within the struct are accessible from anywhere in the program.
Example:
```cpp
struct MyStruct {
int x; // Public member variable
void display() { // Public member function
cout < "hello,="" world!"="" />< />
}
};
int main() {
MyStruct obj;
obj.x = 5; // Accessing public member variable
obj.display(); // Accessing public member function
return 0;
}
```
In the above example, the struct "MyStruct" has a public member variable "x" and a public member function "display". These members can be accessed directly from the main function without any restrictions.
Conclusion:
When the keyword "struct" is used instead of "class" in C++, the default access level of the members is public. This means that all the variables and functions declared within the struct can be accessed from anywhere in the program.
When the keyword "struct" is used instead of the keyword "class" in C++, it affects the default access level of its members. By default, the access level of members in a struct is public, whereas in a class, it is private.
Access Levels:
Access levels determine how the members (variables and functions) of a class or struct can be accessed by other parts of the program.
There are three access levels in C++:
1. Public: Members can be accessed from anywhere in the program.
2. Private: Members can only be accessed within the same class or struct.
3. Protected: Members can be accessed within the same class or struct, or by derived classes.
Default Access Level with "struct":
When the keyword "struct" is used instead of "class", the default access level of the members is set to public. This means that all the variables and functions declared within the struct are accessible from anywhere in the program.
Example:
```cpp
struct MyStruct {
int x; // Public member variable
void display() { // Public member function
cout < "hello,="" world!"="" />< />
}
};
int main() {
MyStruct obj;
obj.x = 5; // Accessing public member variable
obj.display(); // Accessing public member function
return 0;
}
```
In the above example, the struct "MyStruct" has a public member variable "x" and a public member function "display". These members can be accessed directly from the main function without any restrictions.
Conclusion:
When the keyword "struct" is used instead of "class" in C++, the default access level of the members is public. This means that all the variables and functions declared within the struct can be accessed from anywhere in the program.
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When struct is used instead of the keyword class means, what will happen in the program?a)access is public by defaultb)access is private by defaultc)access is protected by defaultd)access is deniedCorrect answer is option 'A'. Can you explain this answer?
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