TIWASON SA BALAY

#include <iostream>
#include <cmath>
#include <math.h>
#include <stdlib.h>

using namespace std;

int main(){

	/*
	START MAIN MENU
	*/
	mainmenu:
	char menu;

	cout << "\t Main List Option\n\n";
	cout <<"\t [A] Perimeter\n";
	cout <<"\t [B] Area\n";
	cout <<"\t [C] Surface Area\n";
	cout <<"\t [D] Exit\n";
	cout <<"\t Enter Option: ";
	cin >> menu;

		// START MENU SWITCH
		switch(menu){
			case 'a':
				char permenu;
				perimeter:
				system("CLS");
				cout << "\t Perimeter \n\n";
				cout << "\t Geometric Figure\n\n";
				cout << "1] Square\n";
				cout << "2] Rectangle\n";
				cout << "3] Back to Main List of Options\n";
				cout << "\t Enter Option: ";

					// PERIMETER MENU
					permenu:
					cin >> permenu;
					switch (permenu){
						// SQUARE
						case '1':
							double side, total;
							system("CLS");
							cout << "\t Square \n";
							cout << "Enter measurement for one side of the square: ";
							cin >> side;
							cout << "inches\n";
							total = 4*side;
							cout << "The perimeter of a square with a side measurement \n" << "\t of " << side << "inches\n";
							cout << "\t is " << total <<"inches\n\n" ;
							cout << "Would you like to go back to Perimeter menu <Y/N>";

							// prompt
							char prompt;
							promptsquare:
							cin >> prompt;
							switch (prompt){
								case 'y':
									goto perimeter;
								case 'Y':
									goto perimeter;
								case 'n':
									exit(0);
								case 'N':
									exit(0);
								default :
									cout << "Please enter only <Y/N>\n";
									goto promptsquare;
							break;
						}
						// RECTANGLE
						case'2':
							double base,length;
							system("CLS");
							cout << "\t Rectangle \n";
							cout << "Enter length and base: ";
							cin >> length >> base;
							double rectotal;
							rectotal = 2*(length + base);
							cout << "The area of the rectangle is: " << rectotal << "\n";

							 cout << "Would you like to go back to Perimeter menu <Y/N>";
							// prompt
							char promptrect;
							promptrect:
							cin >> promptrect;
							switch (promptrect){
								case 'y':
									goto perimeter;
								case 'Y':
									goto perimeter;
								case 'n':
									exit(0);
								case 'N':
									exit(0);
								default :
									cout << "Please enter only <Y/N>\n";
									goto promptrect;
							break;
								}
							// BACK TO MAIN MENU
							case'3':
								goto mainmenu;

							default:
								cout << "Please enter numbers 1-3. \n";
								goto permenu;
							}

			case 'b':
				char areamenu;
				area:
				system("CLS");
				cout << "\t Area \n\n";
				cout << "1] Triangle\n";
				cout << "2] Trapezoid\n";
				cout << "3] Circle\n";
				cout << "4] Back to Main List of Options\n";
				cout << "\t Enter Option: ";

					// START AREA MENU
					cin >> areamenu;
					switch(areamenu){
						//Triangle
						case '1':
								double base,height,tritotal;
							system("CLS");
							cout << "\t Triangle \n";
							cout << "Enter base and height: ";
							cin >> base >> height;
							tritotal = base*height/2;
							cout << "The area of the triangle is: " << tritotal << "\n";

							 cout << "Would you like to go back to Area menu <Y/N>";
							// prompt
							char promptri;
							promptri:
							cin >> promptri;
							switch (promptri){
								case 'y':
									goto area;
								case 'Y':
									goto area;
								case 'n':
									exit(0);
								case 'N':
									exit(0);
								default :
									cout << "Please enter only <Y/N>\n";
									goto promptri;
							break;
								}
						case '2':
								double base1,base2,traptotal;
							system("CLS");
							cout << "\t Trapezoid \n";
							cout << "Enter base1, base2, and height: ";
							cin >> base1 >> base2 >> height;
							traptotal = (base1+base2)*height*1/2;
							cout << "The area of the trapezoid is: " << traptotal << "\n";

							 cout << "Would you like to go back to Area menu <Y/N>";
							// prompt
							char promptrap;
							promptrap:
							cin >> promptrap;
							switch (promptrap){
								case 'y':
									goto area;
								case 'Y':
									goto area;
								case 'n':
									exit(0);
								case 'N':
									exit(0);
								default :
									cout << "Please enter only <Y/N>\n";
									goto promptrap;
							break;
								}
					}
		}
}