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- package HW22lesson11;
- import java.util.Scanner;
- public class Calculator {
- static Scanner scanner = new Scanner(System.in);
- public static void main(String[] args) {
- int num1 = getNum();
- int num2 = getNum();
- char operation = getOperation();
- int result = result(num1, num2, operation);
- System.out.println("Результат операции: " + result);
- }
- public static int getNum() {
- System.out.println("Введите число:");
- int num;
- if (scanner.hasNextInt()) {
- num = scanner.nextInt();
- } else {
- System.out.println("Вы допустили ошибку при вводе числа. Попробуйте еще раз.");
- scanner.next();
- num = getNum();
- }
- return num;
- }
- public static char getOperation() {
- System.out.println("Введите операцию:");
- char operation;
- if (scanner.hasNext()) {
- operation = scanner.next().charAt(0);
- } else {
- System.out.println("Вы допустили ошибку при вводе операции. Попробуйте еще раз.");
- scanner.next();
- operation = getOperation();
- }
- return operation;
- }
- public static int result(int num1, int num2, char operation) {
- int result;
- switch (operation) {
- case '+':
- result = num1 + num2;
- break;
- case '-':
- result = num1 - num2;
- break;
- case '*':
- result = num1 * num2;
- break;
- case '/':
- result = num1 / num2;
- break;
- default:
- System.out.println("Операция не распознана. Повторите ввод.");
- result = result(num1, num2, getOperation());
- }
- return result;
- }
- }
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