Question

Write a Java program to print the result of the following operations. Test Data:
a. -5+8*6
b. (55+9) % 9
c. 20+-3 5/8
d. 5+15/3 2-8% 3​

Answer 1

Answer:

a is correct please like and follow

Answer 2

Switch should be used such that the operators are taken from the user and numbers also.

Explanation:

public class abc

{

  public static void main(String[] args)

{

   

     double firstNum;    

     double secondNum;    

     char operator;      

     double value;        

     

     System.out.println("Enter expressions such as  2 + 2  or  34.2 * 7.81");

     System.out.println("using any of the operators +, -, *, /.");

     System.out.println("To end, enter a 0.");

     System.out.println();

     

     while (true) {

         

         

     

         System.out.print("? ");

         firstNum = TextIO.getDouble();

         if (firstNum == 0)

            break;

         operator = TextIO.getChar();

         secondNum = TextIO.getlnDouble();

         

         

         

         switch (operator)

{

             case '+':

                value = firstNum + secondNum;

                break;

             case '-':

                value = firstNum - secondNum;

                break;

             case '*':

                value = firstNum * secondNum;

                break;

             case '/':

                value = firstNum / secondNum;

                break;

             default:

                System.out.println("Unknown operator: " + operator);

                continue;  

         } // end switch

         

         

         

         System.out.println("Value is " + value);

         System.out.println();

                   

     }  

     

     System.out.println("done");

   

  }  

}