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/* ***************************************************************
* Program Title: Area Program csc102 H001
* Program Name: w10178836-P02.cpp
* Name: Sarah Mirza
* StuID: w10178836
* Date: 18 March 2024
*
* Objectives/Description: To calculate the area and perimeter of the given figures.
* Input: shape names and their measurements.
* Output: area and perimeter
* ****************************************************************
*/

/* *************************************************
* Function Names: square, rectangle, circle, triangle and trapezoid (all individual functions).
* Function Description: it askes for the required measurements and then calculate the area and parameter of the specific shape.
* Function Parameters: width, height, lenght(1,2,3,4), and radius.
* Paramter type, name and use. the parameters are all double&
* What is returned, if anything. Nothing is returned since they are void functions.
* *************************************************
*/



#include <iostream>
#include <cmath>
#include <limits>
#include <string>

using namespace std;

const double pi = 3.14159265358979323846;

void getValidInput(double& input, const string& prompt) {
    cout << prompt;
    while (!(cin >> input)) {
        cout << "Invalid input. Please enter a numerical value." << endl;
        cin.clear();
        cin.ignore(numeric_limits<streamsize>::max(), '\n');
        cout << prompt;
    }
}

class Square {
private:
    double side;

public:
    Square() : side(0.0) {}

    void setSide(double s) {
        side = s;
    }

    double getArea() const {
        return side * side;
    }

    double getPerimeter() const {
        return 4 * side;
    }
};

class Rectangle {
private:
    double length;
    double width;

public:
    Rectangle() : length(0.0), width(0.0) {}

    void setDimensions(double l, double w) {
        length = l;
        width = w;
    }

    double getArea() const {
        return length * width;
    }

    double getPerimeter() const {
        return 2 * (length + width);
    }
};

class Triangle {
private:
    double side1;
    double side2;
    double height;

public:
    Triangle() : side1(0.0), side2(0.0), height(0.0) {}

    void setDimensions(double s1, double s2, double h) {
        side1 = s1;
        side2 = s2;
        height = h;
    }

    double getArea() const {
        return 0.5 * side1 * height;
    }

    double getPerimeter() const {
        return side1 + side2 + height;
    }
};

class Circle {
private:
    double radius;

public:
    Circle() : radius(0.0) {}

    void setRadius(double r) {
        radius = r;
    }

    double getArea() const {
        return pi * radius * radius;
    }

    double getPerimeter() const {
        return 2 * pi * radius;
    }
};

class Trapezoid {
private:
    double base1;
    double base2;
    double side1;
    double side2;
    double height;

public:
    Trapezoid() : base1(0.0), base2(0.0), side1(0.0), side2(0.0), height(0.0) {}

    void setDimensions(double b1, double b2, double s1, double s2, double h) {
        base1 = b1;
        base2 = b2;
        side1 = s1;
        side2 = s2;
        height = h;
    }

    double getArea() const {
        return 0.5 * (base1 + base2) * height;
    }

    double getPerimeter() const {
        return base1 + base2 + side1 + side2;
    }
};

int main() {
    string usershape;

    while (true) {
        cout << "Choose a shape to calculate its area and perimeter, or type 'quit' to exit. Shapes available: square, rectangle, triangle, circle, trapezoid: ";
        cin >> usershape;

        if (usershape == "quit") {
            cout << "Program ended.";
            break;
        }

        if (usershape == "square") {
            Square square;
            double side;
            getValidInput(side, "Enter side length: ");
            square.setSide(side);
            cout << "Area: " << square.getArea() << endl;
            cout << "Perimeter: " << square.getPerimeter() << endl;
        }

        else if (usershape == "rectangle") {
            Rectangle rectangle;
            double length, width;
            getValidInput(length, "Enter length: ");
            getValidInput(width, "Enter width: ");
            rectangle.setDimensions(length, width);
            cout << "Area: " << rectangle.getArea() << endl;
            cout << "Perimeter: " << rectangle.getPerimeter() << endl;
        }

        else if (usershape == "triangle") {
            Triangle triangle;
            double side1, side2, height;
            getValidInput(side1, "Enter side 1 length: ");
            getValidInput(side2, "Enter side 2 length: ");
            getValidInput(height, "Enter height length: ");
            triangle.setDimensions(side1, side2, height);
            cout << "Area: " << triangle.getArea() << endl;
            cout << "Perimeter: " << triangle.getPerimeter() << endl;
        }

        else if (usershape == "circle") {
            Circle circle;
            double radius;
            getValidInput(radius, "Enter radius: ");
            circle.setRadius(radius);
            cout << "Area: " << circle.getArea() << endl;
            cout << "Perimeter: " << circle.getPerimeter() << endl;
        }

        else if (usershape == "trapezoid") {
            Trapezoid trapezoid;
            double base1, base2, side1, side2, height;
            getValidInput(base1, "Enter length of base 1: ");
            getValidInput(base2, "Enter length of base 2: ");
            getValidInput(side1, "Enter length of side 1: ");
            getValidInput(side2, "Enter length of side 2: ");
            getValidInput(height, "Enter height: ");
            trapezoid.setDimensions(base1, base2, side1, side2, height);
            cout << "Area: " << trapezoid.getArea() << endl;
            cout << "Perimeter: " << trapezoid.getPerimeter() << endl;
        }

        else {
            cout << "Shape not recognized." << endl;
        }
    }

    return 0;
}
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