Question

C++ exercise:

The statements in the file main.cpp are in incorrect order.

using namespace std;

#include <iostream>

int main()
{
string shape;
double height;
#include <string>
  
cout << "Enter the shape type: (rectangle, circle, cylinder) ";
cin >> shape;
cout << endl;
  
if (shape == "rectangle")
{
cout << "Area of the circle = "
<< PI * pow(radius, 2.0) << endl;
  
cout << "Circumference of the circle: "
<< 2 * PI * radius << endl;
  
cout << "Enter the height of the cylinder: ";
cin >> height;
cout << endl;
  
cout << "Enter the width of the rectangle: ";
cin >> width;
cout << endl;
  
cout << "Perimeter of the rectangle = "
<< 2 * (length + width) << endl;
double width;
}
  
cout << "Surface area of the cylinder: "
<< 2 * PI * radius * height + 2 * PI * pow(radius, 2.0)
<< endl;
}
else if (shape == "circle")
{
cout << "Enter the radius of the circle: ";
cin >> radius;
cout << endl;
  
cout << "Volume of the cylinder = "
<< PI * pow(radius, 2.0)* height << endl;
double length;
}
return 0;

else if (shape == "cylinder")
{
double radius;
  
cout << "Enter the length of the rectangle: ";
cin >> length;
cout << endl;
  
#include <iomanip>
  
cout << "Enter the radius of the base of the cylinder: ";
cin >> radius;
cout << endl;
  
const double PI = 3.1416;
cout << "Area of the rectangle = "
<< length * width << endl;
else
cout << "The program does not handle " << shape << endl;
cout << fixed << showpoint << setprecision(2);
#include <cmath>
}

Rearrange the statements so that they prompt the user to input:

• The shape type (rectangle, circle, or cylinder)
• The appropriate dimension of the shape.

Note: For grading purposes place the cylinder height statement before the radius statement.

The program then outputs the following information about the shape:

• For a rectangle, it outputs the area and perimeter
• For a circle, it outputs the area and circumference
• For a cylinder, it outputs the volume and surface area.

Use 3.1416 as the constant value for any calculations that may need \piπ.

After rearranging the statements, your program should be properly indented.

Answer 1

#include <iostream>
#include <string>
#include <cmath>
#include <iomanip>

using namespace std;

int main() {
    string shape;
    double height;
    double width;
    double radius;
    double length;
    const double PI = 3.1416;
    cout << "Enter the shape type: (rectangle, circle, cylinder) ";
    cin >> shape;
    cout << endl;
    
    cout << fixed << showpoint << setprecision(2);
    if (shape == "rectangle") {
        cout << "Enter the length of the rectangle: ";
        cin >> length;
        cout << endl;
        cout << "Enter the width of the rectangle: ";
        cin >> width;
        cout << endl;
        cout << "Perimeter of the rectangle = "
             << 2 * (length + width) << endl;
        cout << "Area of the rectangle = "
             << length * width << endl;
    } else if (shape == "circle") {
        cout << "Enter the radius of the circle: ";
        cin >> radius;
        cout << endl;
        cout << "Area of the circle = "
             << PI * pow(radius, 2.0) << endl;
        cout << "Circumference of the circle: "
             << 2 * PI * radius << endl;
    } else if (shape == "cylinder") {
        cout << "Enter the height of the cylinder: ";
        cin >> height;
        cout << endl;
        cout << "Enter the radius of the base of the cylinder: ";
        cin >> radius;
        cout << endl;
        cout << "Surface area of the cylinder: "
             << 2 * PI * radius * height + 2 * PI * pow(radius, 2.0)
             << endl;
        cout << "Volume of the cylinder = "
             << PI * pow(radius, 2.0) * height << endl;
    } else
        cout << "The program does not handle " << shape << endl;
    return 0;
}