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#include <iostream>

using namespace std;

// Define a class named "MyClass"
class MyClass {
private:
    int x;   // Private member variable
public:
    // Constructor that initializes "x"
    MyClass(int x) : x(x) {}
    
    // Static member function that prints a message to the console
    static void printMessage() {
        cout << "This is a static function." << endl;
    }
    
    // Static member function that squares an integer and returns the result
    static int square(int num) {
        return num * num;
    }
};

// The main function
int main() {
    // Call the static member function "printMessage" using the class name
    MyClass::printMessage();
    
    // Call the static member function "square" using the class name
    // and assign the result to a variable named "result"
    int result = MyClass::square(5);
    
    // Print the result to the console
    cout << result << endl;
    
    return 0;
}