Question

Problem 1: Basic Calculator Given two integers, ’x’ and ’y’ and a character representing an arithmetic operator, ’op’. Return the result of ’x’ ’op’ ’y’ if possible, otherwise return -1. .java = BasicCalculator.java Examples (a) basicCalculator(2, 3, ’+’) returns 5 (b) basicCalculator(7, 3, ’%’) returns 1. (c) basicCalculator(5, 0, ’%’) prints an error message and returns -1 (5%0 is invalid).

Answer 1

public class BasicCalculator {

    public static int basicCalculator(int x, int y, char op) {
        if (op == '+') {
            return x + y;
        } else if (op == '-') {
            return x - y;
        } else if (op == '*') {
            return x * y;
        } else if (op == '/') {
            if (y == 0) {
                return -1;
            }
            return x / y;
        } else if (op == '%') {
            if (y == 0) {
                return -1;
            }
            return x % y;
        }
        return -1;
    }

    public static void main(String[] args) {
        System.out.println(basicCalculator(2, 3, '+'));
        System.out.println(basicCalculator(7, 3, '%'));
        System.out.println(basicCalculator(5, 0, '%'));
    }
}