Question

Using C++, Write a program that will provide the user a menu from which the user may select to calculate the area of one of four geometric shapes: a circle, a rectangle, a triangle, and a trapezoid. You should use the most appropriate SWITCH block for this program. The user will input all data needed to calculate the area. The program should output all data input by the user, the calculated area, and the geometric shape selected. Run this program using the following data: Run 1: select circle and use a radius of 2.3 Run 2: select rectangle and use length=5.5 and width=4.1 Run 3: Select triangle and use height=4 and base=1.8 Run 4: Select trapezoid and use height=6, a=11, and b=14

Answer 1

#include <iostream>
using namespace std;

int main()
{
int choice;
double radius,length,width,base,height,area,a,b;

//menu for the user to select a geometric shape
   cout<<"Choose one of the four geometric shapes\n1.Circle\t2.Rectangle\t3.Triangle\t4.Trapezoid\n";
   cin>>choice;

// switch loop to calculate area based on the choice of the user
   switch(choice)
   {
   case 1:
   cout<<"Enter the radius of Circle\n";
   cin>>radius;
   area=3.14*radius*radius;
   cout<<"Geometric Shape : Circle\n";
   cout<<"Radius : "<<radius<<endl;
   cout<<"Area : "<<area<<endl;
   break;
   case 2:
   cout<<"Enter the length and width of Rectangle\n";
   cin>>length>>width;
   area=length*width;
   cout<<"Geometric Shape : Rectangle\n";
   cout<<"Length : "<<length<<endl;
   cout<<"Width : "<<width<<endl;
   cout<<"Area : "<<area<<endl;
   break;
   case 3:
   cout<<"Enter the base and height of Triangle\n";
   cin>>base>>height;
   area=0.5*base*height;
   cout<<"Geometric Shape : Triangle\n";
   cout<<"Bse : "<<base<<endl;
   cout<<"Height : "<<height<<endl;
   cout<<"Area : "<<area<<endl;
   break;
   case 4:
   cout<<"Enter the height,a,b values of Trapezoid\n";
   cin>>height>>a>>b;
   area=0.5*height*(a+b);
   cout<<"Geometric Shape : Trapezoid\n";
   cout<<"Height : "<<height<<endl;
   cout<<"a : "<<a<<endl;
   cout<<"b : "<<b<<endl;
   cout<<"Area : "<<area<<endl;
   break;
   default:
   cout<<"Invalid choice\n";
   break;
   }
   return 0;
}

input Choose one of the four geometric shapes 4. Trapezoid 1.circle 2.Rectangle 3.Triangle 1 Enter the radius of Circle 2.3 Geometric Shape : Circle Radius 2.3 Area 16.6106 ..Program finished with exit code 0 Press ENTER to exit console. ENG 18:47 x INTI 13-06-2019

input Choose one of the four geometric shapes 4. Trapezoid 1.Circle 2.Rectangle 3.Triangle 2 Enter the length and width of Rectangle 5.5 4.1 Geometric Shape : Rectangle Length : 5.5 Width : 4.1 Area : 22.55 ..Program finished with exit code 0 Press ENTER to exit console. ENG 18:48 INTL 13-06-2019

input v Choose one of the four geometric shapes 2. Rectangle 3. Trianqle 4.Trapezoid 1.Circle 3 Enter the base and height of Triangle 1.8 4 Geometric Shape : Triangle Bse 1.8 Height 4 Area : 3.6 . ..Program finished with exit code Press ENTER to exit console. ENG 18:48 2 INTL 13-06-2019

input Choose one of the four geometric shapes 3. Triangle 1.Circle 4. Trapezoid 2. Rectangle 4 Enter the height,a,b values of Trapezoid 6 11 14 Geometric Shape: Trapezoid Height : 6 a: 11 b: 14 Area: 75 ....Program finished with exit code 0 Press ENTER to exit console. ENG 18:48 x INTI 13-06-2019