Notes

/*Program Name: Week 5Lab#6 Geometry Calculator.cpp
Programmer: Caleb Cohen
Date: 2/16/17
Version: 1.0
Description: Prompts user with a list of potential calculations, then calculates the one the user chooses based off of user input for the calculations.
*/
#include<iostream>
#include <cmath>

using namespace std;
int main()
{
int choice; //Defining variables
double radius; //Defining variables
double length; //Defining variables
double width; //Defining variables
double base; //Defining variables
double height; //Defining variables
double c_area; //Defining variables
double r_area; //Defining variables
double t_area; //Defining variables

cout << "Geometry Calculator" << endl; //Displaying menu
cout << "1. Calculate the Area of a Circle" << endl; //Displaying menu
cout << "2. Calculate the Area of a Rectangle." << endl; //Displaying menu
cout << "3. Calculate the Area of a Triangle." << endl; //Displaying menu
cout << "4. Quit" << endl; //Displaying menu

cin >> choice; //User selection
switch (choice) //Switch statement
{
case 1:
cout << "Please enter the radius of the circle: "; //Prompting user for radius
cin >> radius; //User enters radius
while (radius <= 0) //Loop to prevent radius from being below 0
{
cout << "Error! Number must be greater than zero!" << endl;
cout << "Please enter a new radius: ";
cin >> radius;
}
c_area = 3.14159 * radius; //Calculation for area
cout << "The area of the circle for the radius that you inputted is: " << c_area << endl; //Output for area of the circle
break;
case 2:
cout << "Please enter the length of the rectangle: "; //Prompting user for length
cin >> length; //User enters length
while (length <= 0) //Loop to prevent length from being below 0
{
cout << "Error! Number must be greater than zero!" << endl;
cout << "Please enter a new length: ";
cin >> length;
}
cout << "Please enter the width of the rectangle: "; //Prompting the user for width
cin >> width; //User enters width
while (width < 0) //Loop to prevent width from being below 0
{
cout << "Error! Number must be greater than zero!" << endl;
cout << "Please enter a new width: ";
cin >> width;
}
r_area = length * width; //Calculation for area
cout << "The area of the rectangle for the length and width that you inputted is: " << r_area << endl; //Output for area of the rectangle
break;
case 3:
cout << "Please enter the length of the triangle's base: "; //Prompting user for length of the base
cin >> base; //User enters length of the base
while (base < 0) //Loop to prevent length of the base from being below 0
{
cout << "Error! Number must be greater than zero!" << endl;
cout << "Please enter a new base: ";
cin >> base;
}
cout << "Please enter the height of the triangle: "; //Prompting user for the height
cin >> height; //User enters height
while (height < 0) //Loop to prevent height from being below 0
{
cout << "Error! Number must be greater than zero!" << endl;
cout << "Please enter a new height: ";
cin >> height;
}
t_area = height * base * 0.5; //Calculation for area
cout << "The area of the triangle for the height and base that you inputted is: " << t_area << endl; //Display for area
break;
case 4:
cout << "The program will now end.n"; //Ending program option 4
break;
default:
cout << "Error! Selection was not on the list!" << endl; //Anything other than the four options ends the program



}



return 0;
}