Question

this is java code

package calculator;

import java.util.Scanner;

import java.lang.Math;

public class Calculator {

public static void main(String[] args) {

   double numx, numy;

Scanner scanner = new Scanner(System.in);

System.out.println(" Enter an 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: Modulus");

System.out.println("6: Power");

System.out.println("7: Square");

System.out.println("8: Factorial");

System.out.println("9: Log");

System.out.println("10: Sin");

System.out.println("11: Absolute value");

System.out.println("12: Average Of Array Elements");

String operator = scanner.next();

System.out.println();

double output;

switch(operator)

{

case "1":

    System.out.print("Enter first number:");

/* We are using data type double so that user

* can enter integer as well as floating point

* value

*/

numx = scanner.nextDouble();

System.out.print("Enter second number:");

numy = scanner.nextDouble();

   output = sum( numx, numy);

break;

case "2":

    System.out.print("Enter first number:");

/* We are using data type double so that user

* can enter integer as well as floating point

* value

*/

numx = scanner.nextDouble();

System.out.print("Enter second number:");

numy = scanner.nextDouble();

   output = Subtraction( numx, numy);

break;

case "3":

    System.out.print("Enter first number:");

/* We are using data type double so that user

* can enter integer as well as floating point

* value

*/

numx = scanner.nextDouble();

System.out.print("Enter second number:");

numy = scanner.nextDouble();

   output = Multiplication( numx,numy);

break;

case "4":

    System.out.print("Enter first number:");

/* We are using data type double so that user

* can enter integer as well as floating point

* value

*/

numx = scanner.nextDouble();

System.out.print("Enter second number:");

numy = scanner.nextDouble();

   output = Division( numx, numy );

break;

case "5":

    System.out.print("Enter first number:");

/* We are using data type double so that user

* can enter integer as well as floating point

* value

*/

numx = scanner.nextDouble();

System.out.print("Enter second number:");

numy = scanner.nextDouble();

output =Modulus( numx,numy);

   break;

case "6":

    System.out.print("Enter first number:");

numx = scanner.nextDouble();

System.out.print("Enter second number:");

numy = scanner.nextDouble();

   output = power( numx, numy);

   break;

case "7":

   System.out.print("Enter first number:");

numx = scanner.nextDouble();

   output= Square_root( numx);

   break;

case "8":

    System.out.print("Enter first number:");

numx = scanner.nextDouble();

output=factorial( numx);

break;

case "9":

       System.out.print("Enter first number:");

     numx = scanner.nextDouble();

   output=log1( numx); // log function

   break;

case "10":

     System.out.print("Enter first number:");

     numx = scanner.nextDouble();

   output=sin1( numx); //sin finction

   break;

case "11":

     System.out.print("Enter first number:");

     numx = scanner.nextDouble();

   output=absolute( numx); //absolute function

   break;

case "12":

      

  

output= average( );

   break;

/* If user enters any other operator apart from

* then display an error message to user

*

*/

default:

System.out.printf("You have entered wrong operator");

return;

}

System.out.println(output);

}

public static double sum(double numx, double numy)

{

double sum=0;

return sum=numx+numy;

}

public static double Subtraction(double numx, double numy)

{

double sub=0;

return sub=numx-numy;

}

public static double Multiplication(double numx, double numy)

{

double Mul=0;

return Mul=numx*numy;

}

public static double Division(double numx, double numy)

{

double Division=0;

return Division=numx/numy;

}

public static double Modulus(double numx, double numy)

{

double Mod=0;

return Mod=numx%numy;

}

public static double power(double numx, double numy)

{

double output = Math.pow(numx, numy);

return output;

}

public static double Square_root(double numx)

{

double output = Math.sqrt(numx);

return output;

}

public static double factorial(double numx)

{

double factorial=1;  

for(int i = 1; i <= numx; ++i) //loop for calculation of factorial

{

// factorial = factorial * i;

factorial *= i;

}

return factorial;

}

public static double log1(double numx)

{

    double output=1;

return output=Math.log(numx);

}

public static double absolute(double numx)

{

    double output=1;

return output=Math.abs(numx);

}

public static double sin1(double numx)

{

double output=1;

return output=Math.sin(numx);

}

public static double average( )

{

    int n =1;

    Scanner scanner = new Scanner(System.in);

double total = 0;

   System.out.println("Enter size of array");

   n=scanner.nextInt();

   int i=0;

   double[] arr = new double[n];

   while(i<arr.length) // while loop for getting elements in array

   {

       System.out.print("Enter Element No."+(i+1)+": ");

   arr[i] = scanner.nextDouble();

   i++;

   }

   for(int j=0; j<arr.length; j++){ // loop to calculate sum of array

    total = total + arr[j];

}

   double average = total / arr.length;

   return average;

}

}

for this code draw High level flowchart.

Answer 1

Flowchart for the program: