The Slicing Problem

Medium Polymorphism & Function Overloading

Solve in Playground →

Problem Statement

Create `Base` (virtual `void show()` printing ‘Base’) and `Derived` (overriding `show()` to print ‘Derived’). Write a global function `void displayValue(Base b)` that takes a Base object by VALUE. In `main()`, instantiate `Derived` and pass it to `displayValue`. Observe the output.

Input Format

None

Output Format

Print the message triggered by the value-passed object.

Constraints

None

Sample Output

Base

Explanation

Passing a derived object by value slices off its derived properties and destroys polymorphism. To maintain polymorphic behavior, objects must be passed by pointer or reference.

Starter Code

#include <iostream>

class Base {
public:
    // Implement virtual show
};

class Derived : public Base {
public:
    // Override show
};

// Write displayValue passing Base by value

int main() {
    // Instantiate Derived, pass to displayValue
    return 0;
}

Limits

Time Limit: 1s
Memory Limit: 256MB

Start Coding in IDE →