Question

Description: In the main program create a menu system that will allow a user to choose from 3 option. 1. Fraction calculator 2. Grading schema 3. Biggest integer

Program #1 Fraction calculator: You will start by prompting the user for two fractions in the main. The inputs should be two strings in the form #/#. You must account for both positive and negative numerators. Therefor -#/# is also a valid input. In a separate function create a program that will calculate the following. Addition, Subtraction, Multiplication and Division of the two fractions. Then display the results in a formatted table. All outputted fractions must be in lowest terms or whole numbers if possible.

Answer 1

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Program name FractionCalculator.java

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import java.util.Scanner;

public class FractionCalculator {

   public static void main(String[] args) {

       int ch;
       Scanner sc = new Scanner(System.in);
       String fraction1="";
       String fraction2="";

       while (true) {

           System.out.println("Menu");
           System.out.println("1. Fraction Calculator");
           System.out.println("2. Grading schema");
           System.out.println("3. Biggest integer");
           System.out.println("4. Exit");
           System.out.print("Enter your choice: ");
           ch = sc.nextInt();

           if(ch!=4)  
           {  
               System.out.print("Enter Fraction 1: ");
               fraction1 = sc.next();

               System.out.print("Enter Fraction 2: ");
               fraction2 = sc.next();
           }
          
           switch (ch) {

           case 1:
               //Calling function
               fractionCalculator(fraction1, fraction2);
               break;

           case 2:
               System.out.println("Implementation In Progress");
               break;

           case 3:
               System.out.println("Implementation In Progress");
               break;

           case 4:
               break;

           default:
               System.out.println("Invalid choice");

           }
          
           if(ch==4)
               break;
       }
       System.out.println("Thank you!");
   }

   public static void fractionCalculator(String fraction1, String fraction2) {

       int numerator1, numerator2;
       int denominator1, denominator2;

       String addResult;
       String subResult;
       String mulResult;
       String divResult;

       String fraction1Split[] = fraction1.split("/");
       String fraction2Split[] = fraction2.split("/");

       // Extract numerator and denominator
       numerator1 = Integer.parseInt(fraction1Split[0]);
       denominator1 = Integer.parseInt(fraction1Split[1]);

       // Extract numerator and denominator
       numerator2 = Integer.parseInt(fraction2Split[0]);
       denominator2 = Integer.parseInt(fraction2Split[1]);

       // Logic for fractional calculation
       addResult = (numerator1 * denominator2 + numerator2 * denominator1)+ "/" + (denominator1 * denominator2);
       subResult = (numerator1 * denominator2 - numerator2 * denominator1)+ "/" + (denominator1 * denominator2);
       mulResult = (numerator1 * numerator2) + "/"+ (denominator1 * denominator2);
       divResult = (numerator1 * denominator2) + "/"+ (denominator1 * numerator2);

       System.out.println("------------------------------");
       System.out.println("Addition Result : " + addResult);
       System.out.println("Substraction Result : " + subResult);
       System.out.println("Multiplication Result : " + mulResult);
       System.out.println("Division Result : " + divResult);
       System.out.println("------------------------------");

   }
}