#ifndef square_h
#define square_h

#include <stdlib.h>
#include "shape.h"

double squareArea(Shape* square) {
    double side = square->perimeter / 4;
    double area = side * side;
    return area;
}

Shape* newSquare(double perimeter) {
    Shape* square = malloc(sizeof(Shape));
    square->numSides = 3;
    square->perimeter = perimeter;
    square->area = squareArea;
    return square;
}

#endif