method 계산기 연습

import java.util.Scanner;

public class Quiz_01 {
	public static int plus(int a, int b) { //return값이 int이므로 plus 앞에 int를 써준다
		int result;
		result=a+b;
		return result;
	}

	public static int minus(int a, int b) {//return값이 int이므로 plus 앞에 int를 써준다
		int result;
		result=a-b;
		return result;
	}

	public static int mply(int a, int b) {//return값이 int이므로 plus 앞에 int를 써준다
		int result;
		result=a*b;
		return result;
	}

	public static double divide(int a, int b) {//return값이 double이므로 plus 앞에 double을 써준다
		double result;
		result=a/(double)b; //나눈 값이 소수점이 나와야할때는 꼭 나눌 수를 double로 Casting해주자.
		return result;
	}

	public static void main(String[] args) {
		
		int x=0;
		int y=0;
		
		Scanner sc = new Scanner(System.in);
		System.out.print("첫번째 수를 입력하세요 > ");
		x=Integer.parseInt(sc.nextLine());
		System.out.print("두번째 수를 입력하세요 > ");
		y=Integer.parseInt(sc.nextLine());
		
		System.out.println(x+" + "+y+" = "+plus(x,y)); //15
		System.out.println(x+" - "+y+" = "+minus(x,y)); // 5
		System.out.println(x+" * "+y+" = "+mply(x,y)); //50
		System.out.println(x+" / "+y+" = "+divide(x,y)); //1.5
		
		
		/*
		System.out.println(plus(10,5)); //15
		System.out.println(minus(10,5)); // 5
		System.out.println(mply(10,5)); //50
		System.out.println(divide(3,2)); //1.5
		 */
	}
}