Hacktoberfest21/Calculator.java at master · krimanisha/Hacktoberfest21 · GitHub

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package assignment;

import java.util.Scanner;

public class Calculator {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		 System.out.println("enter first number");
		 int a=sc.nextInt();
		 System.out.println("enter enter operation");
		 char c=sc.next().charAt(0);
		 System.out.println("enter second number");
		 int b=sc.nextInt();
         opr(a,c,b);
	}


	public static void opr(double a,char b,double c) {
		 double ans;
		switch (b) {
		case '+':

			ans=a+c;
			System.out.println(ans);

			break;


		case '-':

			ans=a-c;
			System.out.println(ans);
			break;

		case '/':

			ans=a/c;
			System.out.println(ans);
		break;


		case '*':

			ans=a*c;
			System.out.println(ans);
		break;

		default:
			System.out.println("please enter a valid operator");
		}
		}

	}