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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		Scanner reader0 = new Scanner(System.in);
  13.         System.out.println("Please enter first number");
  14.         double a = reader0.nextDouble();
  15.         System.out.println("Please enter one of the following function inputs; + to add numbers, - to subtract numbers, * to multiply, / to divide, ^ to power, # to square root.");
  16.         String operator = reader0.next();
  17.         double result = 0.0;
  18.         if (operator.equals("#")) {
  19.             result = Math.sqrt(a);
  20.         } else {
  21.             System.out.println("Please enter second number");
  22.             double b = reader0.nextDouble();
  23.             switch (operator) {
  24.                 case "+":
  25.                     result = a + b;
  26.                     break;
  27.                 case "-":
  28.                     result = a - b;
  29.                     break;
  30.                 default:
  31.                     System.out.println("Invalid entry entered");
  32.                     break;
  33.             }
  34.         }
  35.         System.out.println("Result is " + result);
  36. 	}
  37. }
Success #stdin #stdout 0.14s 31228KB
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4
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2
stdout
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Please enter first number
Please enter one of the following function inputs; + to add numbers, - to subtract numbers, * to multiply, / to divide, ^ to power, # to square root.
Please enter second number
Result is 2.0
https://ideone.com/hrodSd
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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