java-programming/mini calculator at master · surajkr122/java-programming · GitHub

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import java.util.*;
public class mini_calculator
{
    public static int addition(){
        Scanner sc=new Scanner(System.in);
        System.out.println("enter the numbers");
        int a=sc.nextInt();
        int b=sc.nextInt();
        return(a+b);
    }
    public static int substraction(){
        Scanner sc=new Scanner(System.in);
        System.out.println("enter the numbers");
        int a=sc.nextInt();
        int b=sc.nextInt();
        return(a+b);
    }
    public static int multiplication(){
        Scanner sc=new Scanner(System.in);
        System.out.println("enter the numbers");
        int a=sc.nextInt();
        int b=sc.nextInt();
        return(a*b);
    }
    public static int division(){
        Scanner sc=new Scanner(System.in);
        System.out.println("enter the numbers");
        int a=sc.nextInt();
        int b=sc.nextInt();
        return(a/b);
    }
    public static void main(String[]args){
        Scanner sc=new Scanner(System.in);
        System.out.println("enter your response:\n1.addition\n2.substraction\n3.multiplication\n4.division");
        int x=sc.nextInt();
        if(x==1){
            int a=addition();
            System.out.println(a);
        }
        else if(x==2){
            int s=substraction();
            System.out.println(s);
        }
        else if(x==3){
            int m=multiplication();
            System.out.println(m);

        }
        else if(x==4){
            int d=division();
            System.out.println(d);

        }
        else
        System.out.println("invalid option");
    }

}