Question

In java The Java language has a math class with several methods you can use for mathematical calculations. For instance, to find the square root of a number you can use the Math.sqrt method: double value = 9.0; double result = Math.sqrt(value); In the above example the variable result will hold 3.0. The same holds true for the cube root: double value = 9.0; double result = Math.cbrt(value); You can also get the base 10 logarithm of a number: double value = 9.0; double result = Math.log10(value); For this question you are going to create a simple calculator. From the keyboard take in a character that represents the operation and a double that represents the value to operate on. The operations are S - square root C - cube root L - base 10 logarithm Your input should be in this format S 81 This indicates that you want the square root of 81. Just as C 45 indicates that you want the cube root of 45. And L 45 indicates that you want the log 10 of 45 Using a switch statement determine the operation and using the appropriate math function output either the Square root, Cube root, or Log 10 of the value input. Use a default statement to catch when the input is not valid. Format your code with hilite.me and submit it in the text box provided.

Answer 1

Note: Could you plz go through this code and let me know if u need any changes in this.Thank You
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// MathCalculator.java

import java.util.Scanner;

public class MathCalculator {

   public static void main(String[] args) {
       double val;
       char ch;
       int choice;
       /*
       * Creating an Scanner class object which is used to get the inputs
       * entered by the user
       */
       Scanner sc = new Scanner(System.in);

       // Getting the input entered by the user
       System.out.println("S.Square Root");
       System.out.println("C.Cube Root");
       System.out.println("L.Logarithm base 10");

       ch = sc.next(".").charAt(0);
       val = sc.nextDouble();

       switch (ch) {
       case 'S':
       case 's': {
           System.out.println("Square root of " + val + " is "+ Math.sqrt(val));
           break;
       }
       case 'C':
       case 'c': {
           System.out.println("Cube root of " + val + " is " + Math.cbrt(val));
           break;
       }
       case 'L':
       case 'l': {
           System.out.println("Logarithm of " + val + " is " + Math.log10(val));
           break;
       }
       default: {
           System.out.println("Invalid Choice");
       }
       }

   }

}

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Output:

S.Square Root
C.Cube Root
L.Logarithm base 10
S 9.0
Square root of 9.0 is 3.0

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Output#2:

S.Square Root
C.Cube Root
L.Logarithm base 10
C 27.0
Cube root of 27.0 is 3.0

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Output#3:

S.Square Root
C.Cube Root
L.Logarithm base 10
L 25
Logarithm of 25.0 is 1.3979400086720377

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