Task - Control Flow Statements - Menu-driven Calculator

[akash-coded]

Create a menu-driven calculator which performs the following arithmetic operations on two user-input numbers:

1. Addition
2. Subtraction
3. Multiplication
4. Division
5. Quit

The program should ask the user whether they want to continue or not after every calculation.

[vshvandana]

import java.util.*;

public class Calculator {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter number1:");
        int num1 = sc.nextInt();
        System.out.println("Enter number2:");
        int num2 = sc.nextInt();
        char c;
        do {
            System.out.println("1. Add");
            System.out.println("2. Subtract");
            System.out.println("3. Multiply");
            System.out.println("4. Divide");
            System.out.println("5. Quit");
            System.out.println("Enter your choice [1-5]:");
            int userchoice = sc.nextInt();
            switch (userchoice) {
                case 1:
                    System.out.println("Sum of two numbers is :" + (num1 + num2));
                    break;
                case 2:
                    System.out.println("Difference between two numbers is :" + (num1 - num2));
                    break;
                case 3:
                    System.out.println("Multiplication of two numbers is : " + (num1 * num2));
                    break;
                case 4:
                    System.out.println("Division of two numbers is :" + (num1 / num2));
                    break;
                case 5:
                    break;
            }
            System.out.println("Do you want to continue? Y/N");
            c = sc.next().charAt(0);

        } while (c == 'Y');

    }
}

[uzma23]

import java.util.Scanner;

public class menuDrivenCalc {
    public static void performOperation(int choice, int a, int b) {
        switch (choice) {
            case 1:
                add(a, b);
                break;
            case 2:
                subtract(a, b);
                break;
            case 3:
                multiply(a, b);
                break;
            case 4:
                divide(a, b);
                break;
            default:
                System.out.println("Ivalid Argument");
        }

    }

    private static void divide(int a, int b) {
        if (b == 0) {
            System.out.println("You can't divide " + a + " by 0");
            return;
        }
        System.out.println("Division of " + a + " and " + b + ": " + a / b);
    }

    private static void multiply(int a, int b) {
        System.out.println("Multiplication of " + a + " and " + b + ": " + a * b);
    }

    private static void subtract(int a, int b) {
        System.out.println("Subtraction of " + a + " and " + b + ": " + (a - b));
    }

    private static void add(int a, int b) {
        int sum = a + b;
        System.out.println("Addition of " + a + " and " + b + ": " + sum);
    }

    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        int choice = 1;
        System.out.println(" Simple Calculator");
        while (choice != 5) {
            System.out.println("1. Addition");
            System.out.println("2. Subtraction");
            System.out.println("3. Multiplication");
            System.out.println("4. Division");
            System.out.println("5. Exit");

            System.out.println("Enter Your Choice");
            choice = s.nextInt();
            System.out.println("Enter the two numbers:");
            int a = s.nextInt();
            int b = s.nextInt();
            performOperation(choice, a, b);
        }

    }

}

[ghost]

import java.util.*;

public class calc {
    public static void main(String[] args) {
        double a, b, result;
        int n, condition;
        Scanner scanner = new Scanner(System.in);
        do {
            System.out.println("Press 1 for addition");
            System.out.println("Press 2 for subtraction");
            System.out.println("Press 3 for Multiplication");
            System.out.println("Press 4 for Division");
            n = scanner.nextInt();
            switch (n) {
                case 1:
                    System.out.println("Enter the first number:");
                    a = scanner.nextDouble();
                    System.out.println("Enter the second number:");
                    b = scanner.nextDouble();
                    result = a + b;
                    System.out.println("The sum of the numbers " + a + " and " + b + " is = " + result);
                    break;
                case 2:
                    System.out.println("Enter the first number:");
                    a = scanner.nextDouble();
                    System.out.println("Enter the second number:");
                    b = scanner.nextDouble();
                    result = a - b;
                    System.out.println("The difference of the numbers " + a + " and " + b + " is = " + result);
                    break;
                case 3:
                    System.out.println("Enter the first number:");
                    a = scanner.nextDouble();
                    System.out.println("Enter the second number:");
                    b = scanner.nextDouble();
                    result = a * b;
                    System.out.println("The product of the numbers " + a + " and " + b + " is = " + result);
                    break;
                case 4:
                    System.out.println("Enter the first number:");
                    a = scanner.nextDouble();
                    System.out.println("Enter the second number:");
                    b = scanner.nextDouble();
                    result = a / b;
                    System.out.println("In Division of " + a + " and " + b + "The Quotient is = " + result);
                    System.out.println("The remainder is = " + (a % b));
                    break;
                default:
                    System.out.println("Invalid choice!! Please make a valid choice !!!");
            }
            System.out.println("To continue, Press 1 else Press any button to exit");
            condition = scanner.nextInt();
        } while (condition == 1);
    }
}

[gayatribabar]

import java.util.Scanner;

public class HelloWorld {
    public static void main(String[] args) {
        String s;
        Scanner sc = new Scanner(System.in);
        do {
            System.out.println("Enter a number: ");
            int x1 = sc.nextInt();
            System.out.println("Enter another number: ");
            int x2 = sc.nextInt();

            System.out.println("Calculator\n 1.Add \n 2.Substract \n 3.Multiplication \n 4.Division \n 5.Quit");
            int n = sc.nextInt();
            switch (n) {
                case 1:
                    System.out.println("Sum = " + (x1 + x2));
                    break;
                case 2:
                    System.out.println("Sub = " + (x1 - x2));
                    break;
                case 3:
                    System.out.println("Multiplication = " + (x1 * x2));
                    break;
                case 4:
                    System.out.println("Division = " + (x1 / x2));
                    break;
                case 5:
                    System.exit(0);
            }
            System.out.println("If you want to continue enter Y else enter any other character");
            s = sc.next();

        } while (s.equals("Y"));

    }

}

[ApoorvaSinha]

package Assignments;

import java.util.Scanner;

public class Calculator {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		System.out.println("Welcome to Cal !");
		int num1,num2,res,choice;
		String continueChoice;
		Scanner sc= new Scanner(System.in);
		System.out.println("Enter Num 1: ");
		num1=sc.nextInt();
		System.out.println("Enter Num 2: ");
		num2=sc.nextInt();
		
		System.out.println("Enter your choice[1-5] :");
		loop:do {
			System.out.println(" 1. Addition\n 2. Subtraction\n 3. Multiplication\n 4.Division\n 5.Quit");
			choice=sc.nextInt();
			switch(choice) {
			case 1:
				res=num1+num2;
				System.out.println("Addition of "+ num1+" and "+num2+" : "+res);
				break;
			case 2:
				res=num1-num2;
				System.out.println("Subtraction of "+ num1+" and "+num2+" : "+res);
				break;
			case 3:
				res=num1*num2;
				System.out.println("Multiplication of "+ num1+" and "+num2+" : "+res);
				break;
			case 4:
				res=num1/num2;
				System.out.println("Division of "+ num1+" and "+num2+" : "+res);
				break;
			case 5:
                break loop;
			default:
                System.out.println("Invalid input. Please try again...");
                break;
			}
			 System.out.print("Do you want to continue? [Y/N]: ");
	             continueChoice = sc.next();
			
		}while(continueChoice.equalsIgnoreCase("Y"));
		System.out.println("Thank you for choosing Cal.");
        sc.close();
	}

}

[Coder-093]

import java.util.*;

public class calc {
  public static void main(String[] args) {
    Scanner scn = new Scanner(System.in);
    System.out.println("Enter the 1st number");
    int n1 = scn.nextInt();
    System.out.println("Enter the 2nd number");
    int n2 = scn.nextInt();
    int choice;
    char c;
    loop: do {
      System.out.println("Possible operations:\n1.add\n2.subtract\n3.multiply\n4.divide\n5.modulus\n6.quit\n");

      System.out.println("Enter your choice");
      choice = scn.nextInt();
      float res = 0;

      switch (choice) {
        case 1:
          res = n1 + n2;
          System.out.println(n1 + " + " + n2 + " = " + res);
          break;
        case 2:
          res = n1 - n2;
          System.out.println(n1 + " - " + n2 + " = " + res);
          break;
        case 3:
          res = n1 * n2;
          System.out.println(n1 + " * " + n2 + " = " + res);
          break;
        case 4:
          res = n1 / n2;
          System.out.println(n1 + " / " + n2 + " = " + res);
          break;
        case 5:
          res = n1 % n2;
          System.out.println(n1 + " % " + n2 + " = " + res);
          break;
        case 6:
          break loop;
        default:
          System.out.println("Enter a proper choice");
          break;
      }
      System.out.println("Do you want to continue?y/n");
      c = scn.next().charAt(0);

    } while (c == 'y');
  }
}

[meghvi-raj]

import java.util.*;

public class MenuDrivenCalculator {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String continueChoice = "N";

        System.out.println("Welcome!");

        loop: do {
            System.out.println("Please enter number 1 : ");
            int num1 = sc.nextInt();
            System.out.println("Please enter number 2 : ");
            int num2 = sc.nextInt();
            System.out.println("1. Addition");
            System.out.println("2. Subtraction");
            System.out.println("3. Multiplication");
            System.out.println("4. Division");
            System.out.println("5. Quit");
            System.out.print("Enter Choice[1-5]: ");

            int userChoice = sc.nextInt();
            switch (userChoice) {
                case 1:
                    System.out.printf("Result : %d \n ", num1 + num2);
                    break;
                case 2:
                    System.out.printf("Result : %d \n", num1 - num2);
                    break;
                case 3:
                    System.out.printf("Result : %d \n", num1 * num2);
                    break;
                case 4:
                    System.out.printf("Result : %d \n", num1 / num2);
                    break;
                case 5:
                    break loop;
                default:
                    System.out.println("Invalid input. Please try again...");
                    break;
            }

            System.out.print("Do you want to continue? [Y/N]: ");
            continueChoice = sc.next();
        } while (continueChoice.equalsIgnoreCase("Y"));

        System.out.println("Thank you for visiting.");
        sc.close();
    }

}

[NavneetBais]

import java.util.* ;
public class Main
{
	public static void main(String[] args) {
	    Scanner sc = new Scanner(System.in);
		System.out.println("Welcome");
		String userChoice ; 
		do{
		    userChoice ="" ;
		    System.out.println("Enter First Number: ");
		    int n1 = Integer.parseInt(sc.nextLine()) ; 
		    System.out.println("Enter Second Number: ");
		    int n2 = Integer.parseInt(sc.nextLine()); 
		    
		    System.out.println("1. Addition");
		    System.out.println("2. Substraction");
		    System.out.println("3. Multiplication");
		    System.out.println("4. Division");
		    System.out.println("5. Quit");
		    System.out.println("Enter Choice [1-5] : ");
		    
		    int result = 0 ;
		    int option = Integer.parseInt(sc.nextLine()) ;
		    
		    switch(option){
		        
		        case 1 :
		            result = n1+n2 ;
		            System.out.println("Result : " + result);
		            System.out.println("Do you want to continue?[Y/N] : ");
		            userChoice = sc.nextLine();
		            break;
		        case 2 :
		            result = n1 - n2 ;
		            System.out.println("Result : "  + result);
		            System.out.println("Do you want to continue?[Y/N] : ");
		            userChoice = sc.nextLine();
		            break;
		        case 3 : 
		            result = n1*n2;
		            System.out.println("Result : " + result);
		            System.out.println("Do you want to continue?[Y/N] : ");
		            userChoice = sc.nextLine();
		            break;
		        case 4 : 
		            result =n1/n2 ;
		            System.out.println("Result : " + result);
		            System.out.println("Do you want to continue?[Y/N] : ");
		            userChoice = sc.nextLine();
		            break;
		        case 5 :
		            System.out.println("Thank you for visiting");
                    break ; 
                default :
                    System.out.println("Invalid Option, Please try again.");
                    userChoice = "Y" ;
                    break;
		        
		    }
		    
		}while(userChoice.equalsIgnoreCase("Y"));
		if(userChoice.equalsIgnoreCase("N")){
		    System.out.println("Thank you for using the calculator.");
		}
                sc.close();
	}
	
	
}

[Shivakukankar]

import java.util.Scanner;

public class MenuCal {
public static void main(String args[]) {

    Scanner sc = new Scanner(System.in);
    String continueChoice;

    System.out.println("Welcome!");

    loop:do{
        int a,b ;
        System.out.println("enter the value of a");
        a=Integer.parseInt(sc.nextLine());
        System.out.println("enter the value of b");
        b=Integer.parseInt(sc.nextLine());

        System.out.println("1. Addition");
        System.out.println("2. Substraction");
        System.out.println("3. multiplication");
        System.out.println("4. Divide");
        System.out.println("5. quit");

        System.out.print("Enter Choice[1-5]: ");

        int Choice = sc.nextInt();
        switch (Choice){
            case 1:
            add(a, b);
            break;
        case 2:
            sub(a, b);
            break;
        case 3:
            mul(a, b);
            break;
        case 4:
            divide(a, b);
            break;
            case 5:
            break loop; // this will break directly out of thr do-while loop
            default:
                System.out.println("Invalid input. Please try again...");
                break;
               
            } 
            System.out.print("Do you want to continue? [Y/N]: ");
            continueChoice = sc.next();
    
    } while (continueChoice.equalsIgnoreCase("Y"));

    System.out.println("Thank you for visiting.");
    sc.close();

}

public static void add(int a,int b){
    int sum = a+b;
    System.out.println("Addition is : "+ sum );
}

public static void sub(int a,int b){
    System.out.println("Substraction of" +a+ "and" +b+ ":"+ (a - b ));
}

public static void mul(int a,int b){
    System.out.println("multiplication of" +a+ "and" +b+ ":"+ a*b );
}

public static void divide(int a,int b){
    if(b==0){
         System.out.println("you cant divide" + a + "by 0");
    }
    System.out.println("Division of" +a+ "and" +b+ ":"+ a/b );
}

}

[lingamurthi]

//CALCULATOR
class Collectionss {
	
	static int add(int a,int b)
	{
		return a+b;
	}
	static int mul(int a,int b)
	{
		return a*b;
	}
	static int div(int a,int b)
	{
		return a/b;
	}
	static int sub(int a,int b)
	{
		return a-b;
	}
	
	public static void main(String[] args) {
System.out.println("Welcome to you");
		Scanner sc =new Scanner(System.in);
		String s="";
		do {
			
			
			System.out.println("1.Addition");
			System.out.println("2.Subtraction");
			System.out.println("3.Multiplication");
			System.out.println("4.Division");
			System.out.println("5.Quit");
			
			System.out.println("Enter the 2 numbers");
			int n1=Integer.parseInt(sc.nextLine());
			int n2=Integer.parseInt(sc.nextLine());
			System.out.println("Enter the choice");
			int n=Integer.parseInt(sc.nextLine());
			
			
			switch (n) {
			case 1: {
				
		        int addition= add(n1,n2);
		        System.out.println(addition);
			}
			break;
			case 2: {
				int subtraction= sub(n1,n2);
				System.out.println(subtraction);
			}
			break;
            case 3: {
            	int multiplication= mul(n1,n2);
            	System.out.println(multiplication);
			}
            break;
            case 4: {
            	int division= div(n1,n2);
            	System.out.println(division);
            }
            break;

            case 5: 
            break;
		
			}
			System.out.println("Are you want to continue or not if yes press Y or no press N");
			 s=sc.nextLine();
		} while(s.equalsIgnoreCase("Y"));
	}
}

[rishim9954]

 
import java.util.*;
public class Main
{
 
static double addition(double a, double b) {
 
return a+b;
}
static double subtraction(double a, double b) {
return a-b;
}
static double multiplication(double a, double b) {
return a*b;
}
static double division(double a, double b) {
return a/b;
}

public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
System.out.println("Welcome..");
double num1=0;
double num2=0;
int choice=0;
String input;
double a=0,b=0,c=0,d=0;

do {
System.out.println("Choose one operation:");
System.out.println("1.Addition.");
System.out.println("2.Subtraction.");
System.out.println("3.Multiplication.");
System.out.println("4.Division.");
System.out.println("5.Quite the Operations.");

System.out.println("Enter Your Choice:");
choice=sc.nextInt();

switch(choice) {
case 1:
System.out.println("Enter the first number:");
num1=sc.nextDouble();
System.out.println("Enter the second number:");
num2=sc.nextDouble();
 a=Main.addition(num1, num2);
System.out.println(a);
break;

case 2:
System.out.println("Enter the first number:");
num1=sc.nextDouble();
System.out.println("Enter the second number:");
num2=sc.nextDouble();
b=Main.subtraction(num1, num2);
System.out.println(a);
break;


case 3:
System.out.println("Enter the first number:");
num1=sc.nextDouble();
System.out.println("Enter the second number:");
num2=sc.nextDouble();
c=Main.multiplication(num1, num2);
System.out.println(c);
break;

case 4:
System.out.println("Enter the first number:");
num1=sc.nextDouble();
System.out.println("Enter the second number:");
num2=sc.nextDouble();
d=Main.division(num1, num2);
System.out.println(d);
break;

case 5:
loop:break;

default:
System.out.println("Invalid input..");
break;


}

System.out.println("Want to continue press Y/N..");
input=sc.next();

}while(input.equalsIgnoreCase("y"));

System.out.println("Thank You...!");

sc.close();

}


	
}

[rrajbanshi]

cal

/*
Create a menu-driven calculator which performs the following arithmetic operations on two user-input numbers:

Addition
Subtraction
Multiplication
Division
Quit
The program should ask the user whether they want to continue or not after every calculation.
*/

import java.util.*;

public class menuDriven {
public static void main(String args[]) {

    Scanner sc = new Scanner(System.in);
    String choice;

    loop:do{
        choice = "";
        System.out.println("enter the value of a");
        int a = Integer.parseInt(sc.nextLine());
        System.out.println("enter the value of b");
        int b = Integer.parseInt(sc.nextLine());

        System.out.println("1. Addition");
        System.out.println("2. Subtraction");
        System.out.println("3. multiplication");
        System.out.println("4. Division");
        System.out.println("5. quit");

        System.out.print("Enter Choice from 1 to 5->:");

        int option = Integer.parseInt(sc.nextLine());
        switch (option){
            case 1:
             System.out.println("sum is :"+ (a+b));
             System.out.println("Do you want to continue? [Y/N]");
             choice = sc.nextLine();
               break;
               
            case 2:
            System.out.println("Sub is :"+ (a - b ));
            System.out.println("Do you want to continue? [Y/N]");
            choice = sc.nextLine();
               break;

            case 3:
              System.out.println("mul is" + (a * b) );
              System.out.println("Do you want to continue? [Y/N]");
              choice = sc.nextLine();
              break;

            case 4:
            if(b == 0){
                System.out.println("divide by zero");
              }
             System.out.println("Div is :" + ( a / b ));
             System.out.println("Do you want to continue? [Y/N]");
             choice = sc.nextLine();
              break;

            case 5:
              break loop; 

            default :
              System.out.println("Unknown Entry");
              choice = "Y";
              break;  
            } 
    
    } while (choice.equalsIgnoreCase("Y"));
    if(choice.equalsIgnoreCase("N")){
        System.out.println("You have pressed 'N', program exited !!");
    }
    sc.close();
}

}

[atirkey123]

Java

import java.util.Scanner;
public class Main
{
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
String choice;

loop:do{
    choice = "";
    System.out.println("enter the value of first number");
    int num1 = Integer.parseInt(sc.nextLine());
    System.out.println("enter the value of second number");
    int num2 = Integer.parseInt(sc.nextLine());

    System.out.println("1. Addition");
    System.out.println("2. Subtraction");
    System.out.println("3. multiplication");
    System.out.println("4. Division");
    System.out.println("5. quit");

    System.out.print("Enter Choice from 1 to 5->:");

    int option = Integer.parseInt(sc.nextLine());
    switch (option){
        case 1:
         System.out.println("sum is :"+ (num1+num2));
         System.out.println("Do you want to continue? [Y/N]");
         choice = sc.nextLine();
           break;
           
        case 2:
        System.out.println("Sub is :"+ (num1-num2 ));
        System.out.println("Do you want to continue? [Y/N]");
        choice = sc.nextLine();
           break;

        case 3:
          System.out.println("mul is" + (num1 * num2) );
          System.out.println("Do you want to continue? [Y/N]");
          choice = sc.nextLine();
          break;

        case 4:
        if(num2 == 0){
            System.out.println("divide by zero");
          }
         System.out.println("Div is :" + ( num1 / num2 ));
         System.out.println("Do you want to continue? [Y/N]");
         choice = sc.nextLine();
          break;

        case 5:
          break loop; 

        default :
          System.out.println("Unknown Entry");
          choice = "Y";
          break;  
        } 

} while (choice.equalsIgnoreCase("Y"));
if(choice.equalsIgnoreCase("N")){
    System.out.println("You have pressed 'N', program exited !!");
}
sc.close();

}

}

[Sk216995]

import java.util.*;
public class calculator {
public static double addition(double a,double b) {

return a+b;
}
public static double substraction(double a,double b) {
	
	return a-b;
	}
public static double multiplication(double a,double b) {
	
	return a*b;
	}
public static double divide(double a,double b) {
	
	return a/b;
	}










public static void main(String[] args) {
	// TODO Auto-generated method stub
	Scanner sc=new Scanner(System.in);
	double a,b;
	String ch;
	do {
	System.out.println("welcome to calculate");
	System.out.println("1.addition");
	System.out.println("2.substraction");
	System.out.println("3.multiplication");
	System.out.println("4.divisible");
	
	System.out.println("enter your choice");
	int choice=Integer.parseInt(sc.next());
	
	switch(choice) {
	
	case 1:
		System.out.println("enter your 1 number");
		a=sc.nextDouble();
		System.out.println("enter your 2 number");
	    b=sc.nextDouble();
	    System.out.println(calculator.addition(a, b));
		break;
		
	case 2:
		System.out.println("enter your 1 number");
		 a=sc.nextDouble();
		System.out.println("enter your 2 number");
		 b=sc.nextDouble();
		System.out.println(calculator.substraction(a, b));
		break;
		
	case 3:
		System.out.println("enter your 1 number");
		 a=sc.nextDouble();
		System.out.println("enter your 2 number");
		 b=sc.nextDouble();
		 System.out.println(calculator.multiplication(a, b));
		break;
		
	case 4:
		System.out.println("enter your 1 number");
		 a=sc.nextDouble();
		System.out.println("enter your 2 number");
		 b=sc.nextDouble();
		 System.out.println(calculator.divide(a, b));
		break;
		
	default:
		System.out.println("enter the correct option");
		break;
	}
		System.out.println("do you want to continue tell(Y/N)");
		 ch=sc.next();
		
		
		
	
	}while(ch.equalsIgnoreCase("y"));
	
	
	
	
	
	
	
	
	
	
	
	}
	

}