The program below is infinite hanbok calculation. I did it as I was taught You don't have to enter the number twice I want to input two at a time and then input the operator immediately to print it out.
And now, it's a repeat sentence that ends when you enter the first number as a fixed number. I want to make it a program that ends when I ask if I will continue at the end of the code and answer N. Where can I change the conditional statement like this?
''' import java.util.Scanner;
public class nuber2 {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
double x = 0;
double y = 0;
String z = "";
while (true) {
System.out.println("Hi, I am really good at math! Put me to the test.");
System.out.print("Please enter number and then press Enter: ");
x = scan.nextDouble();
if (x == 999) {
System.out.print("Bye bye!");
return;
} } else {
System.out.print("Please enter number and then press Enter: ");
y = scan.nextDouble();
System.out.print("Please enter one of the operations +, -, * or / and press Enter:");
z = scan.next();
switch (z) {
case "+":
System.out.println( + x + " + " + y + " = " + (x + y) );
System.out.println("I'm great at subtraction!\n");
break;
case "-":
System.out.println( + x + " - " + y + " = " + (x - y) );
System.out.println("I'm great at subtraction!\n");
break;
case "*":
System.out.println( + x + " * " + y + " = " + (x * y) );
System.out.println("I'm great at subtraction!\n");
break;
case "/":
System.out.println( + x + " / " + y + " = " + (x / y) );
System.out.println("I'm great at subtraction!\n");
break;
default:
System.out.println ("Invalid operator".\n");
} } }}}
'''
java repeat conditional-statement
At the end of the code, I want to make this a program that ends when I ask if I want to continue and answer N. Where can I change the conditional statement like this?
There seems to be an answer you want in the question.
It seems better to declare the variable z as char and use it.
Also, if you divide it by 0, an error will occur, so please use the try-catch statement.
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