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System.out.print("Enter an operator(+, -, *, /):"); Scanner s = new Scanner(System.in); String operator = s.next(); s = new Scanner(System.in); double num1 = s.nextDouble(); s = new Scanner(System.in); double num2 = s.nextDouble(); switch (operator) { case "+": System.out.print(num1 + "+" + num2 + "="); System.out.print(num1 + num2); break; case "-": System.out.print(num1 + "-" + num2 + "="); System.out.print(num1 - num2); break; case "*": System.out.print(num1 + "*" + num2 + "="); System.out.print(num1 * num2); break; case "/": System.out.print(num1 + "/" + num2 + "="); System.out.println(num1 / num2); break; default: System.out.println("Not a valid operator"); }
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