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// Your Name : msglm
// Date: Feb-17-2022
// Program Title: MENU TEMPLATE with IF ELSE
// Program Description: a program with a menu structure that will allow the user to choose an option to calculate area for a: Rectangle, Circle, and a Triangle
#include <iostream>
#include <string>
#include <iomanip>
#include <cmath>
using namespace std;
//Declare Functions
//I'd prefer to have these as seperate files or just declaring them at the top
void triangleArea();
void circleArea();
void rectArea();
// Named constants
int main() {
// Variable declaration
int choice;
char option;
//Program title and description for the user
cout << "MENU TEMPLATE with IF ELSE" << endl << endl;
// User input
do {
do {
cout << "Choose the corresponding number for what task you want to complete." << endl;
cout << "1 - Perform task #1 : Rectangle area" << endl;
cout << "2 - Perform task #2 : Circle area" << endl;
cout << "3 - Perform task #3 : Triangle area" << endl;
cout << "Enter selected number here: ";
cin >> choice;
if (!cin || choice<1 || choice>4) {
cout << "Invalid input selection\n\n";
//This will purge the garbage data
cin.clear(); //Clears error flag
cin.ignore(100, '\n'); //Purges 100 characters of input
}
} while (!cin || choice<1 || choice>4);
// Calculations
// Output to the screen
//This if-else statement need not exist: a switch statement would be much more optimal
if (choice == 1)
{
rectArea();
}
else if (choice == 2)
{
circleArea();
}
else if (choice == 3)
{
triangleArea();
}
else
cout << "Terminating" << endl;
cout << "Would you like to run again? (Y/N): ";
cin >> option;
cout << "\033c";
} while (option == 'Y' || option == 'y');
return 0;
}
void rectArea() {
double height;
double width;
double area;
//User Input
cout << "Perform task #1 : Rectangle area" << endl;
cout << "Input the height in cm: \n";
cin >> height;
cout << "Input the width in cm: \n";
cin >> width;
//Calculation
area = height * width;
//Output
cout << "Area of the rectangle is " << area << " cm^2 \n";
}
void circleArea() {
cout << "Perform task #2 : Circle area" << endl;
double inputRadius;
string measurement;
const double pi = 3.14159;
//User Input
cout << "Please Input the Desired Radius for your Circle in cm: ";
cin >> inputRadius;
//Output
cout << "Area of the circle is " << pi*pow(inputRadius, 2) << "cm^2 \n";
}
void triangleArea() {
double height;
double base;
//User Input
cout << "Perform task #3 : Triangle area" << endl;
cout << "Input the height in cm: \n";
cin >> height;
cout << "Input the base in cm: \n";
cin >> base;
//Output
cout << "Area of the rectangle is " << (height*base)/2 << " cm^2 \n";
}
/*This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
* You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
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