Member Functions Outside the Class (:: Scope Resolution)

Medium Introduction to C++ Classes & Objects

Solve in Playground →

Problem Statement

Define a `Greeter` class with a public method declaration `void sayHello();`. Implement this method *outside* the class using the scope resolution operator (`::`). The method should print “Hello from outside”. Instantiate the class and call the method.

Input Format

None

Output Format

Print the exact greeting.

Constraints

None

Sample Output

Hello from outside

Explanation

Separating declaration from implementation keeps class definitions clean and readable, using `ClassName::MethodName` to link them.

Starter Code

#include <iostream>

class Greeter {
public:
    // Declare sayHello() here
};

// Implement sayHello() outside the class using ::

int main() {
    // Instantiate Greeter and call sayHello()
    return 0;
}

Limits

Time Limit: 1s
Memory Limit: 256MB

Start Coding in IDE →