Pointers to Class Members

Hard Encapsulation, Access Specifiers & The this Pointer PRO

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Problem Statement

Create a `Data` class with a public integer `value`. In `main()`, declare a pointer to the class member `value` using the syntax `int Data::*ptr = &Data::value;`. Instantiate `Data`, read an integer, assign it to the object using `obj.*ptr = input;`, and print it using the same pointer.

Input Format

A single integer.

Output Format

Print 'Pointer Value: [val]'.

Constraints

None

Sample Input

Sample Output

Pointer Value: 42

Explanation

C++ allows declaring pointers that point to class attributes generally, and they must be evaluated against a specific instantiated object using `.*` or `->*`.

Starter Code

#include <iostream>

class Data {
public:
    int value;
};

int main() {
    // Create member pointer, instantiate, read input, assign, and print
    return 0;
}

Limits

Time Limit: 1s
Memory Limit: 256MB

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